Ray asked, in a PM:
Re: Gas Generator Grounding
"So even if I am not using the rest of the AC system the generator should not be plugged into the 30 amp shore power input. Is that right? ..."
I am extremely hesitant to offer specific advice
regarding Portable AC Generator connections, without knowing the full extent and quality of your particular existing wiring
. It should also be noted that Portable Generators are not intended for use aboard boats (tho’ I’ve happily used one for years).
1. Test your Generator
to ensure that the Generator Neutral IS Bonded
(connected) to the Ground.
The Neutral should be
the larger of the two parallel flat blade slots, to the left when viewed with U-Ground “down” (on generator receptacle). A simple continuity test (zero ohms) will suffice.
2. Test your AC Shore Power Inlet
(shore power cord removed) to ensure that the Neutral is NOT Bonded
aboard the boat. Also test your boat’s receptacles for proper polarity, and ungrounded neutrals.
Given that the Boat’s AC Neutral is only grounded through the Shore Power Cable (not aboard the boat), and the Generator Neutral is Bonded to the Generator Ground (as tested above), you can safely plug
your Generator AC Output into your AC Shorepower Inlet, providing Generator Power to the entire AC Distribution Panel. This ensures that:
1. You only have a single
Source of AC power connected (shore OR generator)
2. You only have a single
Neutral Ground point (either at Shore or Generator).
You will have to make up a Generator Power Cord, with a Female end to match your boat’s shore power inlet configuration.
Notwithstanding the configuration (perhaps 30A Twistlok?) of your generator cord, you will only have about 800 Watts (6.7 A) of power available from your 1000W generator.