Quote:
Originally Posted by SeanInColo
I just purchased a 2019 Thor Windsport 29M and it has a WF-5110R 1000W Inverter that is not working. Today I chased the issue down to a lack of 12 V at the input of the inverter. I found that the black/negative wire to the inverter goes under the cab and then is just dangling there, not attached to anything. Yikes.
My question is does the negative cable NEED to go back to the battery negative terminal or can it be grounded right to the chassis? The Thor diagram below shows it goes back to the negative terminal, but is that necessary? Does not grounding it to the chassis frame achieve the same thing?
Thank you!
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The inverter manufacturers recommend the inverter be grounded to the chassis by a nude (non-insulated) 8 awg copper wire. Thor usually routes the negative cable of the a 1000 watt inverters directly to the chassis. The inverter manufacturers recommend the negative cable go directly to the chassis house battery bank. Number 4 AWG 9 strand cable is usually used for the cables of 85 amps or so max.
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