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Portable Generator Grounding #221212 03/14/21 12:19 PM
Joined: Mar 2004
Posts: 782
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BigB Offline OP
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There is a long thread going on at one of the travel trailer forums right now. Seems a guy bought two small portable inverter generators (Ducar 2000) and the instructions are saying that they must be grounded to a ground rod. No exception is provided for a single travel trailer. I disagree with those instructions especially due to the fact that a shock hazard can be introduced when grounding a portable generator to earth.
Now if you carefully read the instructions they could be interpreted to mean that you must use the generator's ground terminal when using a ground rod as opposed to connecting it somewhere else. But it really appears to mean that you must ground the generator no matter what. Then in the Warning! box we see "Always connect the nut and ground terminal on the frame to an appropriate ground source" My gut feeling is that the instructions are at least partly incorrect.
(The Ducar 2000 is made in China)

Attached Files gen ground.jpg
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Re: Portable Generator Grounding [Re: BigB] #221213 03/14/21 01:15 PM
Joined: Mar 2004
Posts: 782
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BigB Offline OP
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Another note, the Ducar 2000 is CSA approved but not CSA/US

Re: Portable Generator Grounding [Re: BigB] #221214 03/14/21 02:24 PM
Joined: Mar 2004
Posts: 782
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BigB Offline OP
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2nd note, going to post this on Mike Holt as well.

Re: Portable Generator Grounding [Re: BigB] #221215 03/14/21 03:48 PM
Joined: Nov 2005
Posts: 824
J
JoeTestingEngr Offline
Member
I would measure resistance between the Neutral and Ground on the generator outlet, and also to the lug. If N-G is Hi R, and G to Lug is Lo R, I would connect the genny lug to the trailer metal.
Joe4


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