 jaaPremium,MVM
join:2000-06-13
kudos:2
 ·Optimum Online
 ·Vonage
| reply to cdru
Re: What about the CableCos and SatCos? I'm curious what the code is for grounding/bonding. If I have my house wired with ethernet, and connect a switch to that wiring, does it have to be grounded/bonded, other than perhaps a 3-prong outlet?
I just don't understand the differnce between that and an ONT. Anyone have a reference to the code violation the NY PSC is quoting?
These are Verizon union installers, wouldn't they know?
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NOTHING justifies terrorism. We don't negotiate with terrorists. Those that support terrorists are terrorists. |
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 cdruGo ColtsPremium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:5
 ·Frontier FiOS
| said by jaa:I'm curious what the code is for grounding/bonding. If I have my house wired with ethernet, and connect a switch to that wiring, does it have to be grounded/bonded, other than perhaps a 3-prong outlet? No. Network cabling is not required to be grounded.
Grounding is done to provide a safe path for excess power to travel. With telephone and cable lines, there is usually opportunities for the connection outside the house to come in contact with a power line or a nearby lightning strike. Also, TVs and VCRs and bleed voltage and current from the main power across the coax. Properly grounded, if the bleeding became excessive then a breaker could trip.
With the ONT, you don't have to worry much about the outside cabling, but there is still a chance for internal wiring to cause a problem. This is why the ONT needs grounded.
Also, "bonding" is the term used when you are talking about connecting multiple grounding points, typically a copper or copper-clad rod driven into the ground. NEC requires that all grounding rods be tied together or bonded by a 6ga copper wire or larger. This allows all grounding rods to be at the same potential. Without being bonded, each grounding rod could have a different potential which is dangerous.
I just don't understand the differnce between that and an ONT. Anyone have a reference to the code violation the NY PSC is quoting? I can't quote the exact passage, but my guess is that the NEC requires cable, telephone, and power lines to be grounded at the entrance of the premises.
These are Verizon union installers, wouldn't they know? They should. But being union doesn't necessarily mean that they aren't sloppy, weren't trained properly, or just have bad habits. |
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jaaPremium,MVM
join:2000-06-13
kudos:2 Reviews:
·Optimum Online
·Vonage
| said by cdru:I can't quote the exact passage, but my guess is that the NEC requires cable, telephone, and power lines to be grounded at the entrance of the premises. That is my guess too - it is based on copper cables coming into the premises, and has not been updated to reflect non-conducting cables (such as fiber) and therefore the whole thing is a joke.
If someone wires you house for sound with copper wires, does NEC require the amplifier be grounded? So long as no copper wires go outside the premises, I see no reason to require grounding to a rod for an ONT.
The only possible rational explanation is there is a chance that currently, or in the future, copper phone or TV cable will be run outside the house, and hence the grounding requirement.
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NOTHING justifies terrorism. We don't negotiate with terrorists. Those that support terrorists are terrorists. |
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cdruGo ColtsPremium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:5 Reviews:
·Frontier FiOS
| NEC 800.100 is the section that covers grounding of metallic sheathed communications cables. You can view a free copy of the NEC here. Follow the link towards the bottom that says view the 2008 version. Free registration required.
Coax cabling would be covered under this section. As an overwhelming majority of ONTs are installed on the exterior of the house, there would be an entry point for the coax.
I can't argue for or against if something should be grounded. I'm going to defer that to people that know much more about that type of thing then I. However, regardless of if it should be, the point is that it currently is required by NEC. The NEC gets updated every couple of years (it was just updated this year) and fiber connections aren't new. |
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jaaPremium,MVM
join:2000-06-13
kudos:2 | Ok, so if they put the ONT inside the house no need for a ground - no metallic sheathed communications cables. |
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cdruGo ColtsPremium,MVM
join:2003-05-14
Fort Wayne, IN
kudos:5 | Possibly, but I don't know. And interior ONT installs are definitely the exception to the rule. |
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