Topic 'Daisy chaining power strips' in forum 'Electronics' - dslreports.com http://www.dslreports.com/forum/Daisy-chaining-power-strips-23184627 en Sat, 11 Feb 2012 13:51:19 EDT Sat, 11 Feb 2012 13:51:19 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23321681 i have a
Large 30"CRT Trinitron
5.1 system
Playstation 3
playstation 2 USA
playstation 2 Japan
External HDD
Cable Box
Computer
Fridge (full size)
another 5.1 system for my computer
and one LCD Monitor

all pulged into 1 20 amp circuit
Sure, I believe that can be done safely. But you can't add much more in the same circuit branch in the room, unless you want to blow a circuit breaker.

I wouldn't do the daisy-chaining of power strips for aesthetic reasons, but I've done this at work to "bridge" the distance gap. As someone already mentioned here, just pay attention to the total current draw. But sometimes you don't know what it is until you actually sit down and do the calculations for not just the power strip current draw, but also the current draw of the entire circuit branch from the breaker box that the power strip(s) is connected to.

And yes, I have connected equipment in daisy-chained power strips and have blown a circuit breaker because of it. There was no fire. If there's nothing but one or two equipment connected to a daisy-chained power strip, there's no hazard esp. if they don't draw too much power. However, I don't implement daisy-chained power strips as a permanet application, even at work. It's strictly a temporary application.

And I've even turned everything on in my basement den except my laserprinter; and when I turned on my printer, the circuit breaker tripped and the room went dark. And I didn't use no stinkin' power strip.

And I think both the zero daisy-chain opinion and the entire discussions in this thread are ridiculous. :D Got a few laughs, though.

Keep in mind that some strips have resetable fuses built into them--typically no more than 2 amps (for short strips). Any overcurrent will trip that fuse instead of the breaker box.

edit: corrected quoting problem]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23321681 Tue, 10 Nov 2009 17:09:43 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23305483 Parasitics have little to do with the material.
Core losses etc does not exist in your Universe of high frequency transformers!?

>Mainly configuration.
And yet you suggested that toroids have lower parasitics for switching transformers... Coils configuration are different than core geometry. :P

>Main point is that with no gap high flux 60Hz designs the inrush current can be destructive.

That part I did not argue with. ;) Toroid material can have internal air gaps based on the mix.

The inrush current only last a few cycles and the current decay exponentially. This happens when the current is switched on at zero crossing and saturated the core. Also a matter of picking a slow/time delay fuse correctly.

An idiot could wired up the center tap incorrectly i.e. connect 2 windings in series backwards etc too. ;P Nothing is fool proof.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23305483 Sat, 07 Nov 2009 08:33:32 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23305253 said by An_Onymous:

Parasitic is determined largely by how the coil is wounded and core material. Can you please elaborate?

Aside from the geometry of the material (toroid vs EI cores), leakage inductance is also determined by the amount of coupling between windings. Bifilar windings has lower leakages etc.
Parasitics have little to do with the material. Mainly configuration. Bifilar is good, shell even better.

Main point is that with no gap high flux 60Hz designs the inrush current can be destructive.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23305253 Sat, 07 Nov 2009 04:02:17 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23303313 The shape is preferred for switching transformers because of significantly lower parasitics.

Parasitic is determined largely by how the coil is wounded and core material. Can you please elaborate?

R - your magnetic material, copper losses etc
C- how you overlap the windings make more difference.

Aside from the geometry of the material (toroid vs EI cores), leakage inductance is also determined by the amount of coupling between windings. Bifilar windings has lower leakages etc.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23303313 Fri, 06 Nov 2009 17:01:07 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23303070 said by srr2:

The greatest advantage to a toroidal power transformer is its lack of an external magnetic field. That can yield enormous advantages in the design of low-noise circuitry that has to be positioned physically close to it. I've never seen a size advantage to a toroid, but maybe those who have are using really expensive core material.
Toroids still leak just a bit less. The shape is preferred for switching transformers because of significantly lower parasitics.
The smaller size of 60 Hz units means higher design flux, and hence higher inrush current. Toroids designed by an idiot can blow huge cartridge fuses on power on, and can easily burn socket strips.
]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23303070 Fri, 06 Nov 2009 16:08:49 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23300595 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23300595 Fri, 06 Nov 2009 08:37:19 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23300337 said by Anonymous_:

the wal-mart amp has a toroidal core transformer as i opened it up to *see * what cheap parts are used 80 (95)VA to 120 (145) VA toroidal core transformer
Quite a bit of newer equipment is using toroid wound transformers, it's primarily for size reduction, it fits better. If it's rated at 145VA then you pretty much know it'll only be capable of about 100W RMS power Max, more likely close to 35W power out. ]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23300337 Fri, 06 Nov 2009 07:22:40 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23299605 said by Anonymous_:

the wal-mart amp has a toroidal core transformer as i opened it up to *see * what cheap parts are used

80 (95)VA to 120 (145) VA toroidal core transformer
Which means jackshit. Any manufacturer could decide to stick a toroidal transformer in and claim the amp is high quality. Toroids aren't really a sign of quality, but they do have some advantages, mainly smaller size and weight compared to their E-I core counterparts. Traditionally they were more expensive, but I'm not sure if that's the case anymore.

The only way to tell if the amp is a good design and lives up to its expectations is to put it through its paces in a series of bench tests.

For one this means running the amplifier up to its rated power output into a dummy load and measuring distortion using a distortion analyzer. That's the most basic test, and the one where poorly designed or overrated amplifiers will fail.

Distortion in excess of 1% THD at the amplifier's maximum rated power level could be considered a failure. Many consumer grade amplifiers tend to have distortion levels as high as 10% at their max rated power.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23299605 Thu, 05 Nov 2009 23:26:10 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23298165 said by SmokChsr:

If you have any audio equipment that is rated in "Peak" power, rest assured it's a "inexpensive" substitute for the real thing.
All serious equipment is rated for "RMS" power.


the wal-mart amp has a toroidal core transformer as i opened it up to *see * what cheap parts are used

80 (95)VA to 120 (145) VA toroidal core transformer]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23298165 Thu, 05 Nov 2009 18:30:54 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23293410 All serious equipment is rated for "RMS" power.

]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23293410 Wed, 04 Nov 2009 21:23:59 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23288246 said by Gbcue:

said by Anonymous_:

said by Subaru:

the heat sink got nice and toasty
that means you over heated it

my sub stays cold even with max power and highest setting on the EQ
No it doesn't.

A warm HS means it's working. My subs HS gets warm as well.

Your subs are just cheap underpowered pieces of crap.
Any amp I've seen and felt when not being underpowered will get warm when playing music.. mindyou when you say "Sub stays cold" it's not the sub but the amp and the amp provides amplification not only just to the sub but the other 5 speakers.
--
It's NOT Ni-kon It's NE-KON!






]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23288246 Wed, 04 Nov 2009 00:57:43 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286427 said by Anonymous_:

meh 10watts to a 10" subwoofer will move more air then a 6.5" subwoofer at 10 watts
Yes.

But a 10" sub at 200W will get warm for sure.
--
My BLOG!
Black Friday Ads]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286427 Tue, 03 Nov 2009 18:36:50 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286376 said by Gbcue:

said by Anonymous_:

said by Subaru:

the heat sink got nice and toasty
that means you over heated it

my sub stays cold even with max power and highest setting on the EQ
No it doesn't.

A warm HS means it's working. My subs HS gets warm as well.

Your subs are just cheap underpowered pieces of crap.
meh 10watts to a 10" subwoofer will move more air then a 6.5" subwoofer at 10 watts]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286376 Tue, 03 Nov 2009 18:28:43 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286032 said by Anonymous_:

said by Subaru:

the heat sink got nice and toasty
that means you over heated it

my sub stays cold even with max power and highest setting on the EQ
No it doesn't.

A warm HS means it's working. My subs HS gets warm as well.

Your subs are just cheap underpowered pieces of crap.
--
My BLOG!
Black Friday Ads]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23286032 Tue, 03 Nov 2009 17:22:13 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23285857 said by Subaru:

the heat sink got nice and toasty
that means you over heated it

my sub stays cold even with max power and highest setting on the EQ]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23285857 Tue, 03 Nov 2009 16:54:47 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23282157
I'd never do that again but it took a pounding.. and the heat sink got nice and toasty]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23282157 Mon, 02 Nov 2009 23:04:40 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23281763
Having disassembled a few very flimsy surge suppressor power strips I am amazed that they carried the UL approval marking. The contact surfaces where the plug slides in were made of very thin metal that easily breaks off with very little sideways pressure. Kind of scary when you could be pulling up to 15 amps through that connection.

I have made a few heavy duty portable power receptacles using standard AC outlets installed into enclosed metal receptacle boxes. They hold up very well, and I have a lot more faith in the Leviton outlets that are installed in there!
--
My Jeep is not an SUV. Your SUV is not a Jeep.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23281763 Mon, 02 Nov 2009 21:38:15 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23281747 said by Subaru:

said by pnjunction:

said by Anonymous_:

you do not need 500watts to drive speakers

my wal-mart amp
You might if it's not from wal-mart. :P Sorry couldn't resist.

My Logitech z-5300 set is rated for peak 560W and the z-5500 is over 1000w. That said, there's no way you could sanely crank out all of that power. With a decent source (sources that are weak I have to turn them up) I can't even get close to halfway before it's uncomfortably loud. Full power it would be painful and the cops would probably show up.
Cool I have the Z-580's
just do not play woofer cooker song on the logitech LOL as you will blow that 6.5" mid-woofer]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23281747 Mon, 02 Nov 2009 21:35:45 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23277134 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23277134 Mon, 02 Nov 2009 04:36:49 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23276071 --
My Jeep is not an SUV. Your SUV is not a Jeep.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23276071 Sun, 01 Nov 2009 20:50:14 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273583 said by pnjunction:

said by Anonymous_:

you do not need 500watts to drive speakers

my wal-mart amp
You might if it's not from wal-mart. :P Sorry couldn't resist.

My Logitech z-5300 set is rated for peak 560W and the z-5500 is over 1000w. That said, there's no way you could sanely crank out all of that power. With a decent source (sources that are weak I have to turn them up) I can't even get close to halfway before it's uncomfortably loud. Full power it would be painful and the cops would probably show up.
Cool I have the Z-580's
--
It's NOT Ni-kon It's NE-KON!






]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273583 Sun, 01 Nov 2009 05:45:01 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273441
1) how often do you actually "crank it right up"?

2) unless specifically stated as RMS, it is safe to assume output power rating is peak power

3) even if you have an amplifier rated for 200Wrms, you will NEVER achieve this level of output power with normal audio, only with a pure sine wave will you normally achieve this, how many people here listen to a 1kHz tone cranked to the max?

4) a lot of consumer audio products are overrated

Under normal listening conditions it is safe to assume a home theater receiver uses between 30W-50W on average. Maybe a little more if you're listening to an action packed movie with the subwoofer cranked.

To put things into perspective, sitting just a few feet from the front of a speaker:

1W is about normal
10W is loud
100W - your ears start bleeding (figure of speech of course)
1000W - plenty of power for a small dance hall, cracks start forming in the walls of your house and the neighbors a block down the road call the cops on you
10000W - enough power for a rock concert, structural integrity of your house is at risk]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273441 Sun, 01 Nov 2009 02:20:10 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273226 said by pnjunction:

said by Anonymous_:

you do not need 500watts to drive speakers

my wal-mart amp
You might if it's not from wal-mart. :P Sorry couldn't resist.

My Logitech z-5300 set is rated for peak 560W and the z-5500 is over 1000w. That said, there's no way you could sanely crank out all of that power. With a decent source (sources that are weak I have to turn them up) I can't even get close to halfway before it's uncomfortably loud. Full power it would be painful and the cops would probably show up.
let's not for get my SubWoofer is a true sub as it rated to 18hz :D your is only rated to 35hz

yours is a Woofer and not a sub-woofer

sub is rated for 300WATT RMS (1,000MAX PMPO) other two are 150watt RMS each (300MAX PMPO)]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273226 Sun, 01 Nov 2009 01:01:56 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273159 said by Anonymous_:

you do not need 500watts to drive speakers

my wal-mart amp You might if it's not from wal-mart. :P Sorry couldn't resist.

My Logitech z-5300 set is rated for peak 560W and the z-5500 is over 1000w. That said, there's no way you could sanely crank out all of that power. With a decent source (sources that are weak I have to turn them up) I can't even get close to halfway before it's uncomfortably loud. Full power it would be painful and the cops would probably show up.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23273159 Sun, 01 Nov 2009 00:29:51 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272957 said by Gbcue:

said by TheMG:

Large 30"CRT Trinitron ~240W
5.1 system ~30W
Playstation 3 ~200W
playstation 2 USA ~45W
playstation 2 Japan ~45W
External HDD ~15W
Cable Box ~15W
Computer (assuming a high-end gaming PC under worst load condition) ~500W
Fridge (full size) (let's assume and old power hog of) ~500W
another 5.1 system for my computer ~30W
and one LCD Monitor ~60W
------------------------------
Estimated max power consumption: 1680W
Current draw: 14.6A at 115V

Now this is not taking into account power factor, but assuming that it's not too bad, then if he is using 20A power strips and 20A plugs (the ones with the right angle prongs), he'd be ok under worst load conditions, everything turned on drawing max power, or if the loads are split up between more than one 15A outlets then he's ok too.
Let's try this again.

Large 30"CRT Trinitron - 240W
5.1 system - 500W
Playstation 3 - 200W
playstation 2 USA - 95W
playstation 2 Japan - 45W
External HDD - 15W
Cable Box - 15W
Computer - 600W
Fridge (full size) - 500W
another 5.1 system for my computer - 500W
and one LCD Monitor - 100W
------------------------------------
Total: 2810W @ 120V AC = 23A
@ 110V AC = 25.5A

Over if all are used at the same time.

I don't know about you guys, but my 5.1 systems are a minimum of 500W RMS.
you do not need 500watts to drive speakers

my wal-mart amp drives a 10in subwoofer (4ohms)and two large 2" Air horn Tweeter /8in Woffers-speakers (6ohms)

it's max watt is 55

i tryed Frying the amp by connecting a lot of speakers but was unsuccessful :D]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272957 Sat, 31 Oct 2009 23:16:35 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272945 said by TheMG:

Large 30"CRT Trinitron ~240W
5.1 system ~30W
Playstation 3 ~200W
playstation 2 USA ~45W
playstation 2 Japan ~45W
External HDD ~15W
Cable Box ~15W
Computer (assuming a high-end gaming PC under worst load condition) ~500W
Fridge (full size) (let's assume and old power hog of) ~500W
another 5.1 system for my computer ~30W
and one LCD Monitor ~60W
------------------------------
Estimated max power consumption: 1680W
Current draw: 14.6A at 115V

Now this is not taking into account power factor, but assuming that it's not too bad, then if he is using 20A power strips and 20A plugs (the ones with the right angle prongs), he'd be ok under worst load conditions, everything turned on drawing max power, or if the loads are split up between more than one 15A outlets then he's ok too.
Let's try this again.

Large 30"CRT Trinitron - 240W
5.1 system - 500W
Playstation 3 - 200W
playstation 2 USA - 95W
playstation 2 Japan - 45W
External HDD - 15W
Cable Box - 15W
Computer - 600W
Fridge (full size) - 500W
another 5.1 system for my computer - 500W
and one LCD Monitor - 100W
------------------------------------
Total: 2810W @ 120V AC = 23A
@ 110V AC = 25.5A

Over if all are used at the same time.

I don't know about you guys, but my 5.1 systems are a minimum of 500W RMS.
--
My BLOG!
Black Friday Ads]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272945 Sat, 31 Oct 2009 23:11:55 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272896 said by TheMG:

Large 30"CRT Trinitron ~240W
5.1 system ~30W
Playstation 3 ~200W
playstation 2 USA ~45W
playstation 2 Japan ~45W
External HDD ~15W
Cable Box ~15W
Computer (assuming a high-end gaming PC under worst load condition) ~500W
Fridge (full size) (let's assume and old power hog of) ~500W
another 5.1 system for my computer ~30W
and one LCD Monitor ~60W
------------------------------
Estimated max power consumption: 1680W
Current draw: 14.6A at 115V

Now this is not taking into account power factor, but assuming that it's not too bad, then if he is using 20A power strips and 20A plugs (the ones with the right angle prongs), he'd be ok under worst load conditions, everything turned on drawing max power, or if the loads are split up between more than one 15A outlets then he's ok too.
US ps2 system is 95watts max japan is 45 watts max

one of the 5.1systems use upto 250Watts(that is what it shows on the label)
GFCI 20amp

Fridge is pulged into the outlite

the rest is on a belkin power strip

also add 15watts for the Ethernet over powerline yes it works pulged into the surge protector
 
]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23272896 Sat, 31 Oct 2009 22:59:12 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23271030 5.1 system ~30W
Playstation 3 ~200W
playstation 2 USA ~45W
playstation 2 Japan ~45W
External HDD ~15W
Cable Box ~15W
Computer (assuming a high-end gaming PC under worst load condition) ~500W
Fridge (full size) (let's assume and old power hog of) ~500W
another 5.1 system for my computer ~30W
and one LCD Monitor ~60W
------------------------------
Estimated max power consumption: 1680W
Current draw: 14.6A at 115V

Now this is not taking into account power factor, but assuming that it's not too bad, then if he is using 20A power strips and 20A plugs (the ones with the right angle prongs), he'd be ok under worst load conditions, everything turned on drawing max power, or if the loads are split up between more than one 15A outlets then he's ok too.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23271030 Sat, 31 Oct 2009 14:14:53 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23270796 said by Anonymous_:

said by rawwhide:

If he is going to overload the outlet then the question about chaining shouldn't have been asked. If he is going to fry the wall socket and burn the house down he is going to do it without any daisy chaining. ;)
meh.....

i have a
Large 30"CRT Trinitron
5.1 system
Playstation 3
playstation 2 USA
playstation 2 Japan
External HDD
Cable Box
Computer
Fridge (full size)
another 5.1 system for my computer
and one LCD Monitor

all pulged into 1 20 amp circuit
When you make it in the paper, send us the link!
--
My BLOG!
Black Friday Ads]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23270796 Sat, 31 Oct 2009 13:09:18 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23269911 said by Anonymous_:

meh.....

i have a
Large 30"CRT Trinitron
5.1 system
Playstation 3
playstation 2 USA
playstation 2 Japan
External HDD
Cable Box
Computer
Fridge (full size)
another 5.1 system for my computer
and one LCD Monitor

all pulged into 1 20 amp circuit
I wish you luck. You need it. :hmm:

Tim
--
"Life is like this long line, except at the end there ain't no merry-go-round." - Arthur on The King of Queens
~ Project Hope ~ ]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23269911 Sat, 31 Oct 2009 08:58:00 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23269824 said by rawwhide:

If he is going to overload the outlet then the question about chaining shouldn't have been asked. If he is going to fry the wall socket and burn the house down he is going to do it without any daisy chaining. ;)
meh.....

i have a
Large 30"CRT Trinitron
5.1 system
Playstation 3
playstation 2 USA
playstation 2 Japan
External HDD
Cable Box
Computer
Fridge (full size)
another 5.1 system for my computer
and one LCD Monitor

all pulged into 1 20 amp circuit]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23269824 Sat, 31 Oct 2009 08:19:26 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23263733 said by timcuth:

said by rawwhide:

said by mbaha:

meh just make sure the first one doesn't get tooo hot and your golden
Make sure you don't draw more wattage than is rated for the first one. I would say zero as well. If anything you should use extension cords.
Or for the outlet the first one is plugged in to. :hmm:

Tim
If he is going to overload the outlet then the question about chaining shouldn't have been asked. If he is going to fry the wall socket and burn the house down he is going to do it without any daisy chaining. ;)
--
To talk much and arrive nowhere is the same as climbing a tree to catch a fish.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23263733 Thu, 29 Oct 2009 22:29:13 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23197543
I'm surprised no breakers were tripped and no power strips overheated. Though the computers themselves weren't much of a load (all Pentium 166 iirc) all those CRT monitors must have consumed quite a number of watts!

At work one of the computer labs does have a bit of daisy chaining going on, though not as bad. The most is 3 daisy chained strips powering 5 computers (low end C2D and LCD monitors, so fairly low power usage). They would rather have us daisy chain power strips than to get an electrician to install more outlets, for obvious reasons (strictly economical).]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23197543 Fri, 16 Oct 2009 23:19:41 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23196806
Apparently this practice was common (I saw it later done in a computer lab), and ... yeeeea. Didn't surprise me when a school had a nasty fire.
--
VGMasters my video game forum]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23196806 Fri, 16 Oct 2009 20:14:55 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23196591 said by lordpuffer:

Belkin has some Surge Protectors with very long cords and lot's of outlets. I have 3 of them (however, I would NEVER daisy chain them). They are not too expensive:

»www.newegg.com/Product/ProductLi···rotector
Get these:
»www.rackmountsolutions.net/Power···ical.asp
]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23196591 Fri, 16 Oct 2009 19:32:31 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192024 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192024 Fri, 16 Oct 2009 12:50:24 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23193967
»www.newegg.com/Product/ProductLi···rotector
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"If You Don't Eat Your Meat, You Can't Have Any Pudding"!]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23193967 Fri, 16 Oct 2009 11:47:19 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23193128 said by patcat88:

The fact it didn't trip at 24 amps is very scary. No, circuits can easily take way more than their rating without any damage. The primary reason for setting the limits as they are is the voltage drop to the consumer, not the heat associated with this voltage drop (which indeed increases with the square of the current - before someone argues).
If breakers tripped instantly at their rating you would need a 30A circuit in order to turn on two 100W bulbs at the same time.
If you want to do a real test leave the heaters on for a long time and see if the cord gets *hot* before the breaker trips - it won't ;)]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23193128 Fri, 16 Oct 2009 09:16:42 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192811 said by patcat88:

I just took a UL power strip. Plugged 2 space heaters into it, its on 20 amp circuit, amp meter says 24 amps are going through, 30 seconds go by (it could have gone longer, I'm not running this experiment any longer), no power strip trip.Just about any breaker will be slow to trip at 160% of it's rating. A typical 15 amp breaker will let you get away with 16 amps for over an hour. ]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192811 Fri, 16 Oct 2009 07:18:01 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192271 said by TearAbite:

Where i work, if the safety officer catches you daisy chaining power strips you will get a little checkmark next to your name on the safety-list..
I am going to take a big guess that he is not doing it at work.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192271 Fri, 16 Oct 2009 00:36:48 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192267 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192267 Fri, 16 Oct 2009 00:36:02 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192109
Anyways I wouldn't hesitate to plug one into the other if I just wanted to plug in a couple more small things ie. mouse charger, phone charger, 40w desk lamp, even another LCD at 50-75 watts (although I'd probably put the LCD on the first strip). As it is I have an old-school (two-prong) 3-way splitter plugged into it to get a couple more outlets for small things out of it.

I'd draw the line at plugging another desktop or a couple more powerful (60-100W) lamps. I don't see what the big deal is unless you're pushing close to the 15A rating or are anal retentive.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23192109 Thu, 15 Oct 2009 23:43:09 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191871 »www.homedepot.com/webapp/wcs/sto···etID=109

As I'm sure you've gathered by this point in the thread, daisy-chaining power strips is not an acceptable or safe practice.
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Looks like Reverend Wright got his wish - God Damn America.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191871 Thu, 15 Oct 2009 22:43:45 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191431 said by patcat88:

Always make sure they come with 14 gauge, read the cord. 14 gauge runs cooler than 16. The 16 cord will have a higher temp rating (60C/70C/80C/90C/105C) that can make it run 15 amps, but thats a shortcut and unwise in my opinion. Make sure the power strip has 14 gauge.

Also check for the holographic UL sticker. Look up the number »database.ul.com/cgi-bin/XYV/temp···dex.html
Oops, yeah sorry I meant 14 AWG. I was tired when I wrote up my post.

And yes I do also check for the UL/CSA rating.

As for the breaker I should also mention I look for ones that have a standalone breaker not one of those cheap switch-breaker combo deals. Not that the breaker on the power strip really matter in my case anyways since I have no 20A circuits in the house, it's all 15A.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191431 Thu, 15 Oct 2009 21:10:16 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191150 said by Randells :

Zero? If I have two power strips, I say, "I daisy chained two power strips together." You don't say, "I daisy chained one power strip together" unless you plugged it into itself (and even then it might not be considered a "daisy chain"). So my point is, what I think you guys are trying to say is that the maximum number of safely daisy chained power strips is 1.
You can't daisy chain one thing together.

The definition needs two.
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Black Friday Ads]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191150 Thu, 15 Oct 2009 20:03:55 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23187315 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23187315 Thu, 15 Oct 2009 19:51:23 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191040 said by cowboyro:

Even the cheap power strips have overcurrent protection.
No.

I just took a UL power strip. Plugged 2 space heaters into it, its on 20 amp circuit, amp meter says 24 amps are going through, 30 seconds go by (it could have gone longer, I'm not running this experiment any longer), no power strip trip. Then I turn on a hair dryer (hair dryer, 2 space heaters total), amp meter jumps to 38 amps, 6 seconds later the power switch of the power strip snaps off. Hair dryer and space heater, 28 amps, 16 seconds to trip.

The fact it didn't trip at 24 amps is very scary. The trip curve of the power strip "15 amp" breaker seems more liberal than the 20 amp circuit breaker's trip curve. This is totally unsafe :( Only thing that power strip breaker might do is stop a short or 3 space heaters, it won't stop a small overload from melting the power strip or its 14 gauge cord over many minutes/hours.

Test was done with a clamp amp meter and special extension cord to break out the conductor. Power strip tested was E89769 model BB-06, "relocatable power tap", hologram UL sticker says "transient voltage surge suppressor 99K8".]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23191040 Thu, 15 Oct 2009 19:41:13 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190882 http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190882 Thu, 15 Oct 2009 19:12:56 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190854
never ever ever ever ever am I clear ever daisy chain the powerstrips. I don't care if you don't have enough outlets, find an electrician and make a few new circuits!

Brat75
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2008 sucked, let's make 2009 better.]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190854 Thu, 15 Oct 2009 19:08:13 EDT Re: Daisy chaining power strips http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190404 said by TimOnTheRoad :

Hey guys, what is the maximum safe number of power strips that can be daisy chained. I've got two and want to add a third but don't want to cause a fire hazard. Thanks.
3 times the protection lol]]> http://www.dslreports.com/forum/Re-Daisy-chaining-power-strips-23190404 Thu, 15 Oct 2009 17:48:45 EDT