public
join:2002-01-19
Santa Clara, CA
 ·DSL EXTREME
| reply to VariableARK
Re: Placing CPEs near power lines
said by VariableARK  :We're not that close. probably around 150' I'll go check the plat tomorrow, I'm too sick today. If there are bad effects resetting the radios, it is probably magnetically induced common mode voltage.
At 150 ft the effect should be negligible.
HV lines do not radiate much beyond 50 MHz. |
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VariableARK
join:2003-03-17
USA | reply to Keithb
We're not that close. probably around 150' I'll go check the plat tomorrow, I'm too sick today. |
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Keithb
join:2003-09-16
US
| reply to VariableARK
There is a minimum distance you can be legally to any power-line, and I believe that's 15' so do beware for legality and for safety reasons. We have mounted Satellite arms on our own lift poles right next to secondary service (240v) without any problems.
If the wire is covered, it's more than likely =277/480
Anything not covered with insulation is more than likely primary at 7.2kv on up. |
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VariableARK
join:2003-03-17
USA | reply to John Galt
These are high voltage line -> 480kv I believe. |
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John Galt
Forward, March
Premium
join:2004-09-30
Happy Camp
·CenturyLink
| reply to VariableARK
If you're back 50-ish feet or so and not looking directly *at* the power lines, you should be OK.
There is also a difference between the high voltage and the secondary distribution voltage. There can be nasty transients on the power lines that radiate quite a distance. If you are near those you might see the effects such as resets, etc.
Good grounding and shielding...
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A is A |
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VariableARK
join:2003-03-17
USA | reply to ajayr
How close is too close? We are considering putting a tower up near power lines, and if nothing is going to work I won't pursue the project. |
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