Originally Posted by southpawbrew
Yeah I should have noted the use of the rtd. One difference i didn't think about in the op is: On the new rims tube there is a ground post right on the tube. I wired ground to the post then put a jumper from the ground post to a stainless nut and bolt on the box. Problem? Better way?
I would make sure that there is an actual ground conductor from your incoming power also terminated under the same SS nut on your box. I don't like relying on an enclosure as part of the ground circuit. It should be grounded, yes. But not "in series" like earth ground terminating at point "A" on the box, then another device getting its ground connection from point "B" on the box.... I don't know if that makes any sense or not.
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