Ground generator?

ECones wrote:

KD4UPL wrote:
Connecting a ground rod to a portable generator will accomplish absolutely nothing. It offers no safety or power quality advantage.
I'm an electrical contractor if that matters.

It matters ;)

The electrical contractor that installed my switch said it wasn't necessary as well. But I couldn't explain why -- thus the link in my previous post.

The link in your previous post explains why a home generator with a transfer switch doesn't need a ground rod. It's because home transfer switches don't transfer the neutral. Thus it's not a separately derived system, thus no ground rod is required for a generator hooked up thru a home transfer switch.
That's all pretty irrelevant to a generator being hooked up to an RV.
They are covered by 250-6 in the NEC (Portable and vehicle mounted generators) which states that the frame of a portable generator shall not be required to be grounded . . .

No ground needed unless it is a permanent installation.

The City of LA for one, requires any portable generator be grounded. When we are out doing special events, etc. its either staked or on a water pipe, etc. It's a safety thing only and has nothing to do with conditioning the output. What we do has a LOT of lighting ballasts and remote light heads on the ground or that may also be attached to scaffolding that itself is grounded and I have been knocked on my can more than once when someone neglects to ground the genset and someone screws up the wiring (way too common). BUT, RV service is completely different. Do I do it with my Honda generator with a 100% plastic and isolated case? NO. There is no path to ground anywhere in the RV, so why create one?

smkettner wrote:
No ground needed unless it is a permanent installation.

Thanks. Makes sense.

rjxj wrote:
AND, when you drive that copper rod be SURE you are outside the drip line. It's CODE. :)

And also don't forget to "call before you dig" when you drive that rod...

As has already been mentioned, there is no practical purpose for grounding a portable generator (especially with a copper or steel ground rod). However, in the event that your generator was fully submerged in water, the wiring was crossed, and the GFCI failed to function correctly, all while the generator continued running...then yes, having it grounded might prevent an electrocution.

If I were installing a semi-permanent genset in my RV, then I would ground the unit to the frame...if not for any other reason than to just say I did.

Thanks guys. Sounds like I can continue not worrying about it.