How important is it to ground them.
Do attic antennas need to be grounded.
There is an nec requirement to ground metallic objects in a structure likely to become energized such as metal water pipes appliances gas lines etc.
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.
In the case of an attic installation your tv antenna will be sheltered from the environment so there s no need to ground it for that reason.
But this wouldn t apply to most attic antennas i would think.
Furthermore tv signals are made of electricity.
Will their location in the attic reduce their tendency to build a charge and attract lightning.
I found that a firm grounding of antenna mast gave a better reception as well.
There is no requirement to do this for indoor antennas.
Transmission antennas and cables i d have to pull the code books and check but i m fairly certain they do not require grounding as well.
Yes all outdoor tv antennas should be grounded.
Check to ensure that the vent tube is firmly grounded before connecting the wire.
Antennas mine are receive only for fm tv and public safety bands will be generally restricted to the attic.
I can tell you that as of the 2004 nec and nfpa 101 which covers life safety codes there is no requirement to ground a receive only internal antenna system.
Even if you have a newer plastic antenna there is metal inside.
The antenna is essentially designed to capture that electricity.
For electrical saftey the antenna should be connected to a lightening arrestor and that connected to ground.
If it is important should i just tap the coax or is a separate grounding wire needed.
Note that the coax is going to be grounded at the receiver anyway.
If it is just for reception e g.
