Grounding Box In Attic

From the junction box the existing ground goes back to the panel.

Grounding box in attic.

Grounding with conduit. It doesn t support what you want to do. Here are some photos of my roof top antenna with a grounding wire in the attic. Run a ground wire from it common ground rod where the electricity enters your.

There are very specific requirements for grounding an antenna both via mast ground and a shield ground. Neutral and ground bonded at main service panel. Ground wire would run down the wall and be connected directly to the ground screw of a new 3 prong outlet that will replace the old 2 prong. 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.

Use a metal electrical box when metal sheathed cable also called armored bx cable or metal conduit is running in or out of the box. But first check the electrical plugs of the various devices attached to the tv line. Check to ensure that the vent tube is firmly grounded before connecting the wire. Mount the j box to the side of a framing member such as a wall stud ceiling rafter or floor beam using two 8 by 1 inch wood screws.

Also use metal boxes with interior exposed applications. Note that you do not have to run the ground wire from the antenna you can. Neither apply to an antenna in the attic. Ground the boom to the coax using a grounding block and at the other end.

3 wire l l n feeder to 100 amp sub panel in the second floor attic about 25 30 feet from the main service panel. I found that a firm grounding of. 200 amp main service panel on first floor. Stick to the building code.

You should therefore strongly consider grounding your attic mounted antenna by attaching a grounding block to the coaxial cable to shunt off excessive leaked current. Run a ground block and grounding wire to the main ground. Grounding a 3 wire sub panel in attic. In this way the metal raceway acts in place of the grounding wire that is found in nm cable this is also the main reason why only metal boxes may be used with metal conduit.

So from junction box directly to outlet. From your description it sounds as if you may create a ground loop which may cause problems throughout the house. In some installations using metal conduit the raceway the conduit boxes and connectors serve as the ground for the circuit.