Join Date: Aug 2017
Mentioned: 3 Post(s)
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"Bonded" means the neutral and ground are connected (at the panel/source). The inverter chassis should also be grounded to the vehicle chassis. Directly would be best but via the negative buss bar (That already has a connection to the chassis) would be sufficient.
It's important because UL-458 for mobile inverters allows for 60V on the neutral. These types should not have additional outlets connected. Only use the outlets on the unit.
I looked into this, get the information from people who outfit boats. The RV side is lacking.
The inverter, say 2kw, with 2/0 pos w/175amp fuse & 2/0 neg wire, the chassis gnd post is tiny, maybe 10ga wire? What happens if a catastrophic failure occurs and the +2/0 contacts the chassis with a 10ga gnd wire? red hot glowing wire?
My inverter is mounted on wood so I removed my chassis gnd wire, the thinking is: if the inverter fails and +2/0 contacts an unground case the only thing that will happen is the inverter won't work, replace inverter.
If the +2/0 and -2/0 touch the 175 amp fuse will blow.
I believe in the boating world the chassis gnd should be at least 2/0 back to the battery that way the 175 amp fuse will blow.
Of course do your own research.
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