Grounding a tv antenna isn t just for safety.
Grounding an antenna in attic.
Power to hdtv is surge protected but not sure if i should be grounding my attic antenna by attaching the shield of its coax lead in about 75 ft to a local waterpipe.
The layer of plywood would tend to block those.
Does the moving air coming through these vents create any risk for the indoor antenna.
Originally posted by gerryp123 great ota reception with an attic antenna no amp but i m sure a lighning strike near my hdtv would ruin my day.
Here are some photos of my roof top antenna with a grounding wire in the attic.
The copper wire at the base of the antenna mast attaches to the copper vent tube that runs to the roof through the attic in a 55 year old house.
It might not but there is going to be a whole bunch of electrical wiring in the attic as well for the lightning to follow.
I know some people will say an antenna in the attic doesn t need grounded but i am concerned of both static charge on the antenna causing issues over a long run.
Lastly if i do ground the antenna would grounding it to the outside of the electrical conduit coming into the attic be where i should ground to.
Remember that grounding a tv antenna that s installed outdoors can minimize the effects of indirect lightning strikes or static electric buildup during storms.
The picture below from the national electrical code sums it up well.
Most customers who mount an antenna in their attic end up installing a preamp on their antennas.
Lets say i got a scantenna or a diamond discone antenna and put it in my attic i have a standard bi level with plywood roofing and regular fiberglass shingles or whatever they are made out of.
My attic like most attics have soffit and roof vents.
If i just stuck the antenna in the attic and ran the coax about 20 feet to the scanner would i need.
I installed an electric circuit straight from the breaker box to the attic and i know i connected the ground wire.
One is attached to the mast or pole on which the antenna is mounted.
Grounding an attic antenna.
The web page talks about outdoors and putting the ground right where the cable comes into the house which implies i don t need one for the attic afaict.
Both these wires terminate or are joined together at a place referred to as the power service grounding electrode system located at.
The simple truth is when lightning strikes it s going to do whatever it s going to do and the best we can do is provide a low impedance resistance path to get that energy back to the earth as quickly and as safely.
In the unlikely event that lightning does strike your tv antenna even if you ve done all the proper grounding to it there is no guarantee that damage won t be caused.
Check to ensure that the vent tube is firmly grounded before connecting the wire.
The picture shows two grounding wires attached to the antenna.
I m looking to place an antenna in my attic and am looking for a way to ground the coax.
Do i need to ground an antenna in my attic.
It seems the attic will negate most risks.
The other is attached to the antenna coaxial cable.
