Shore works ATS in and out on Gen power
2005 Damon Astoria 300 Cummins I Just swapped transfer switch but having same issue. I put multi meter from gen to junction box off gen to ATS - 120 red 120 blk. Multi at ATS haven’t checked as Swit...
Forum Discussion
dougrainer wrote:enblethen wrote:
It is a violation of the NEC to ground the neutral and shore power in the rig. Shore power is only grounded at the service connection point. The genset must have the neutral bonded to ground.
Really. I have worked on motorhomes and Gensets for 40 years. The 120 pigtail coming OUT of a Genset for 50 amp and above Gensets. Has 4 to 5 wires.
2 wires are the Black HOT output
1 or 2 wires(depending on the Genset) are WHITE Neutral wires
then 1 wire is the ground output.
ALL go straight to the ATS or the 50 amp female receptacle(if no ATS system). At no point is the Neutral grounded...
On my RV (and I think it's typical of most proper installations), the neutral and ground are bonded together inside the genset. Both connect to the genset's chassis; in my case, to a little vaguely crown shaped bit of metal that attaches where the main genset chassis ground tie attaches to the genset. If measured with an ohmmeter, the neutral and the ground lines coming out from the genset should show a short.
It is true that they should not be connected together at any time for the shore power cord, which is the main reason the transfer switch must switch the neutral as well as the hot(s).
