wrote in message
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I will be installing a standby generator located about 50 ft. from the
grounding rod for my house. If I ground the generator only in main panel,
then there is a possibility that the generator frame will be at a slightly
different potential than the adjacent earth on which someone touching the
generator may be standing. If I install a ground rod at the generator
location, then I will be introducing a ground loop with its associated
problems.

How, according to the NEC, should the generator be grounded? Please
provide a code reference (or quote) if you can.

Many thanks for any help.


There should be grounding requirements in the installation instructions.
Generally there is an external ground lug on the frame or housing of the
generator. This would get connected to your grounding electrode conductor
for lightning protection. There should also be an equipment grounding
conductor that is run with generator conductors to the transfer switch or
panel that you will be supplying the generator power to.