Hello all.

I need some advice regarding the electrical safety ground for a wifi
antenna I'm installing on the brick wall outside my office building.

The antenna is in a 40" x 2" diameter nylon tube. It will be mounted
using a standard A-frame type Channel Master side mount. A short piece
of mast up from the two wall mounts to secure the antenna with U clamps.
It will be up on the wall outside my office door maybe 10 feet.

I have a gas discharge unit that comes with the antenna. It mates to the
bottom connector and terms with the connector for the 4' of coax wire
that leads through the wall to the wireless AP unit. There is a ground
lug on the side of the discharge unit to attach a lead to.

The building is on a hill so the AC units are all mounted on concrete
slabs on the ground at either end of the building. There are no antennas
on the roof... only two old vents from when there was a diner upstairs
and the usual vent pipes from the bathrooms. Power comes in from
underground to a central location at one end of the building.

The building is of wood construction with red brick facing. Shingled
A-frame roof like on a house. It is about 100' wide and my office sits
smack in the middle on the lower ground level.

So thats my setup. Now how and where to connect the safety ground is my
concern.

1) Do I simply go straight down into the ground below and will that
create any arching issues with anything else in/on the building?

2) Is it better to bring the ground lead into the building and over
to the circuit breaker panel for my office (a distance of about 40') and
attach to the neutral wire at that point? If so, what guage wire for
that distance is required?

3) There are probably some large electrical conduits just inside the
wall (that supply power to nextdoor and upstairs) where my AP will be
mounted. Can I attach the ground to one of these with a suitable clamp?

Thanks for the help.