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Old 05-11-2013, 09:10 PM   #1
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Exclamation Need Inverter Install Help

So, Installed my 2000w inverter.
DC directly to battery with 4ga cable through existing hole in floor and a 200amp breaker.
I added a new circuit breaker in the AC side of the box and hooked in a cable that plugs in to the AC side of the inverter.
Black to breaker, AC white to bus, green to ground bus.


Now, even with the inverter off, and its breaker off, if it is plugged in, the trailer will pop my house GFCI thing.

Why is it doing this? What am I doing wrong?

Please, this isn't a discussion of how long the batteries will last etc. I got a great deal on the inverter and only intend to use it for small things or maybe a minute or two on the microwave at a time, no long term draw over maybe 300w.
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Old 05-11-2013, 09:24 PM   #2
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Quote:
Originally Posted by compubmw View Post
So, Installed my 2000w inverter.
DC directly to battery with 4ga cable through existing hole in floor and a 200amp breaker.
I added a new circuit breaker in the AC side of the box and hooked in a cable that plugs in to the AC side of the inverter.
Black to breaker, AC white to bus, green to ground bus.


Now, even with the inverter off, and its breaker off, if it is plugged in, the trailer will pop my house GFCI thing.

Why is it doing this? What am I doing wrong?

Please, this isn't a discussion of how long the batteries will last etc. I got a great deal on the inverter and only intend to use it for small things or maybe a minute or two on the microwave at a time, no long term draw over maybe 300w.
Not for positive but I believe since the M/H is a "floating ground" setup, mostly cause the assembly is on rubber tires, the GFCI in you house references ground as a home is grounded. With reference as ground it sees M/H power not properly grounded. Do you have a standard outlet not on a GFCI outlet? My RV at home is on a standard 30 amp breaker, no GFCI.
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Old 05-11-2013, 09:29 PM   #3
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Originally Posted by VinceU View Post
Not for positive but I believe since the M/H is a "floating ground" setup, mostly cause the assembly is on rubber tires, the GFCI in you house references ground as a home is grounded. With reference as ground it sees M/H power not properly grounded. Do you have a standard outlet not on a GFCI outlet? My RV at home is on a standard 30 amp breaker, no GFCI.
The outlet is a 15amp standard one with buttons on the front of my house. Since its possibly near water, I had to use a GFCI
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Old 05-11-2013, 10:36 PM   #4
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You need a transfer switch to handle the transition not a breaker in the box. Plug wire and inverter into the switch and then into the main breaker.

Otherwise just wire the inverter into a separate outlet or two and plug in when you need it
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Old 05-11-2013, 11:22 PM   #5
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Quote:
Originally Posted by compubmw View Post
I added a new circuit breaker in the AC side of the box and hooked in a cable that plugs in to the AC side of the inverter.
Black to breaker, AC white to bus, green to ground bus.
Trying to understand what you did...

Are you disconnecting (Tripping) the inverter breaker BEFORE you plug into the house power? Back feeding your inverter will destroy it. So I hope this is not what you did.

It is far better to run a separate AC circuit to items you would like to run off the inverter (to keep the load low and not wipe out your battery.

Here is how I did mine. I have a house outlet right next to the inverter powered outlet and swap the surge strip plug between the two to power the entertainment system and the computer/printer.
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Old 05-11-2013, 11:45 PM   #6
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Correct I trip the breaker.
The only things in the trailer that would draw and plugged in are the ones I want to use.
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Old 05-12-2013, 12:00 AM   #7
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What inverter? Some do not tolerate 12v negative bonded with and 120v neutral or ground.
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Old 05-12-2013, 12:02 AM   #8
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Harbor Freight 2000w...runs fine just the thing tripping on shore power.
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Old 05-12-2013, 12:28 AM   #9
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Could not find 2000w but both other brands of HF inverters say:

DO NOT INSTALL THIS INVERTER INTO A BUILDING’S ELECTRICAL SYSTEM. This inverter is a vehicular accessory. It is not designed to be safely used in a building’s electrical system and has not been evaluated to meet building wiring codes. Improper application may create a fire or electric shock hazard.

Pretty sure this applies to an RV system. You may need to isolate all connections when using utility power. Best to at least use a transfer switch. This would switch both 120v hot and neutral. If you connected direct to the distribution panel you are not in compliance with RVIA standards or NEC.
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Old 05-12-2013, 12:35 AM   #10
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Can you explain the wiring you did again. Did you wire the inverter directly into the power distribution panel? I don't think that would work without a transfer switch... Like I said before
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