A Hockey Puck 15/30Amp Adapter to Avoid
This is a style of hockey puck adaptor that was responsible for an intermittent hot skin (open ground). Notice how it shows "Made in USA", has "CSA" symbol, and no mention of "UL". CSA stands for "...
Forum Discussion
The safety ground lug should never carry any significant current unless there's a fault elsewhere. A "hot skin" condition only occurs if the neutral and ground are bonded in the RV in violation of the NEC or shorted together, AND the power source hot and neutral are reversed. Just the absence of the ground alone should not cause any problems, although it's certainly not advised to leave it that way in case a fault should occur.
