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Old 08-16-2012, 10:32 AM   #1
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Join Date: Jul 2012
Posts: 6
Portable Small Construction Type Generator

My question is do you need to ground a portable generator to the earth whenever you want to take it out and use it to power a 25 foot travel trailer because if this is the case then what a pain it becomes driving a 8 foot spike into the earth every time you go camping in the bush where there is no services. I have done reading on this and it seems to be a 50 50 split on if this needs to be done. Can someone please give me and others a definitive answer on this so it can be put to bed for good. Thank you in advance for all your comments.

I have a Whacker 5600 portable generator and also I have a Whacker 2600 portable generator and the spec below is from the manual.

5.8 Grounding the Generator
A ground connection (a) is located on the generator frame. For proper
Operating safety, this ground terminal must be connected to a good
Ground source. This ground connection must comply with National
Electrical Code standards, and state and local regulations.

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Old 08-17-2012, 11:21 AM   #2
Join Date: Jul 2011
Posts: 63
That's are really interesting question. I've never seen anybody do what you suggest. Is it possible that the ground is only necessary when using the genny as an alternate power source for a home? I doubt very much that any trades person ever grounds one.

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Old 08-17-2012, 11:46 AM   #3
Join Date: Nov 2011
Posts: 48
I have never grounded my Honda 2KW generator. Not sure if you should, I just haven't.

When using my generator attached to the TT 30A Shore cable w/ 30A-20A dogbone, my SurgeGuard Electrical Managemet System (EMS) thows an "open ground" fault and prevents current from entering the TT. This is common when using a generator and EMS, because the Generator isn't grounded. To me this probably indicates you should ground the generator, but I and many other don't.

As for getting the EMS to allow the current to flow with an ungrounded generator, you need to either bypass the EMS or better yet create an adapter that ties the ground and neutral lines together -- this statisfies the EMS.

If you or others want more information on creating the adapter there are numerous threads you can read on the various forums. They are very easy and cheap to make...but be sure you are confident in the power you generator is outputting first. Doubt I would use this on a low cost contractor grade generator that doesn't output a pure sine wave
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Old 08-20-2012, 05:14 AM   #4
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Posts: 279
I wonder if no ground is why my Troy Bilt 5500W generator kept tripping it's own breaker and my surge protector?
2005 Ford Excursion Diesel 4X4 with Roadmaster Active Suspension, F350 1 3/16" rear sway bar, Bilstein shocks & steering damper.
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