Join Date: Dec 2002
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|Quoted from www.orlandodigital.tv/Lightning.htm
Antennas In The Attic
If you think you are safer putting your antenna in the attic, think again. Lightning has traveled through a few thousand feet of air (which is a good insulator), two inches of plywood and shingles are not going to make any difference. Roofing nails will add a direct path through the roof anyway.
In the attic, the antenna is grounded through your equipment. This is the path all the static charge (and potentially lightning) will flow. There is always static charge, even when there are no storms around. Because the path is through your equipment, its a relatively high resistance path. This also means your HDTV receiver is having to drain any charge build up on the antenna through the house wiring.
The attic antenna needs to be grounded the same way as an antenna mounted outside.
|Originally posted by MurrayW
My hot water heater is in my attic. Can I ground my antenna to the cold water inlet pipe for the water heater?
|Originally posted by miatasm
Yes a cold water pipe is a suitible NEC ground.