genset grounding

[sparkeusa]

I going to install a commercial 150 KVA generator in Florida.
Generator will be placed around 40 feet far of the service.
Shall I install a new grounding rod for grounding the generator frame and gas pipe close to it or can I use the existing grounding electrode conductor to do that?
It will be a not separately derivated system.Thanks a lot

 

[pete m.]

If it's not a separately derived system then you would treat it as a feeder and use the established grounding electrode system. I assume that the transfer switch does not break the neutral conductor?

Pete

 

[sparkeusa]

Thank you Pete.
I won't break the neutral.

 

[bphgravity]

Check the manufacturer's instructions. Some call for a grounding electrode at the unit for whatever reason.

 

[tom baker]

If its not a seperatly derived system then:
1. no grounding electrodes required at the generator
2. Generator can not have a system bonding jumper installed.

The feeder from the generator must have an Equip Bonding Conductor even if its a 3 phase generator.
See Defintion of SDS
And 250.30