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Old 10-29-2020, 12:58 PM   #1
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Location: St. Louis, MO
Posts: 404
Inverter modification - for easy bypass - and easy change out

My inverter on my last motorhome went out
It was in a difficult position to do the wiring when installed
While it was out of service, it made life difficult to not have 120VAC

On my current rig, I have a pure sine wave unit to change out the modified sine wave unit
Again a difficult position to do the wiring

I have an idea, to both make easy bypass in the event of failure but also make wiring easy
I am going to put a twist lock on both the AC in put and output
I can do the short pig tail and twist lock on the inverter on the bench
Once the old inverter is out, I'll put a j-box with a twist lock on the coach hardwires.
Once the inverter is installed I can easily twist lock together
If the inverter fails I just bypass with the twist locks
The twist locks aren't cheap but will avoid a bad time if I have a failure

Do you see any problems with this idea?
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Old 10-29-2020, 01:31 PM   #2
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Not sure how often inverter pass thru switchs fail, but your plan is sound.
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Old 10-29-2020, 09:46 PM   #3
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Location: SW Louisiana
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For the AC side of the wiring you might consider using WAGO lever nuts either 222 or 221 series.
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
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cat, inverter

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