Grounding/bond req's for generator at radio transmiter site

[LarryFine]

Hey, all. I'm bidding on a standby-generator and ATS install at a radio-station transmitter building that is directly under the tower. There are several transmitters using this tower, and already two or three other generators.

I can see the obvious, where the other, existing generators, propane tanks, and other metal parts are Cad-weld bonded to what must be a ground ring. Plus, a couple of years ago, we did the groundwork for a new cellular site.

I'd like to know if there are standards I can access explaining the requirements, especially below grade, of what we must do, plus info on distances between the building and the tank, generator, ATS, etc., beyond the NEC.

Danke,

 

[tom baker]

It would be specific to the wireless carriers specifications. I have seen several and they are very specific.

 

[LarryFine]

This is for a 5kW FM transmitter, and there were no specs or engineering given to me; only the desire for automatic standby power. They need 40a @ 208/120v, and asked for double that for future use, so I came up with 30kW, but I believe we could get away with 25kW.