PD9145a bonding wire
I have a Progressive Dynamics PD9145A to install. I have muddled my way through most of it, but do not see a spec for the chassis bonding wire. The directions say "Caution risk of fire. Chassis b...
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Bonding is also an appropriate term here—the chassis of the converter is being bonded to the chassis/frame of the motorhome, just as neutral is (or is not) bonded to the frame/ground system.
The wire simply needs to be big enough to handle the maximum fault current without endangering one from fire. The current in question, here, is the output current of the converter, or 45A; so I'd go with a minimum of 8 gauge (though 10 gauge might be marginally acceptable).
This is not required if the converter is attached to and physically a part of the metal distribution panel; it only applies to deck mount converters. (The physical attachment to the panel's chassis accomplishes the bonding for the others.)
On my motorhome, the ground bond wire as installed by Coachmen was the same size as the output wires—all are 6 gauge for the factory 40A converter. While arguably oversized, I guess it was easier for them than stocking and dealing with another wire size just for the bonding.
The wire simply needs to be big enough to handle the maximum fault current without endangering one from fire. The current in question, here, is the output current of the converter, or 45A; so I'd go with a minimum of 8 gauge (though 10 gauge might be marginally acceptable).
This is not required if the converter is attached to and physically a part of the metal distribution panel; it only applies to deck mount converters. (The physical attachment to the panel's chassis accomplishes the bonding for the others.)
On my motorhome, the ground bond wire as installed by Coachmen was the same size as the output wires—all are 6 gauge for the factory 40A converter. While arguably oversized, I guess it was easier for them than stocking and dealing with another wire size just for the bonding.
