According to a guy who came from Comcast, all of Comcast's sites are the same way. Big mama-jama ground cable from a rectifier shelf and #2 to earth. If it's not correct, then at least I'm in good company.
I guess I'll try to call GE tech support and see if they can explain it. I'll bet they can't though. I need to ask them about a torque spec anyway. The quick start guide has a table of torque specs showing 5 inch-pounds for the AC input terminal block. That's gotta be a typo. I'm not going to tell electricians to make 240V 30A circuits *less than fingertight* without getting confirmation from somebody.....and even if they confirm it I'll assume they're wrong. This actually lends credence to Steve's theory. This machine could just be a booby trap so people who read manuals get set on fire. Get Outlook for iOS <https://aka.ms/o0ukef> ------------------------------ *From:* AF <[email protected]> on behalf of Ken Hohhof < [email protected]> *Sent:* Thursday, February 5, 2026 1:25:21 PM *To:* 'AnimalFarm Microwave Users Group' <[email protected]> *Subject:* Re: [AFMUG] Reference ground sizes I can think of 4 general explanations that might fit: 1) current carrying capacity 2) ground potential difference 3) safety of equipment or personnel in some fault condition 4) some regulation or code that may not make sense but you have to follow it just because Our guesses are probably not going to be helpful, I would ask your low voltage guy where this spec comes from. It seems very specific, it must come from somewhere. If he says it’s in the GE installation manual, I would ask GE. OK, there’s another possibility #5, it’s what they’ve always done and he doesn’t know why. *From:* AF <[email protected]> *On Behalf Of *Steve Jones *Sent:* Thursday, February 5, 2026 11:59 AM *To:* AnimalFarm Microwave Users Group <[email protected]> *Subject:* Re: [AFMUG] Reference ground sizes My guess would be so that the fire starts aways from the rectifier and not at it. Not saying there is an inherent fire risk. But it takes the detrimental load away to a far off point of failure. On Thu, Feb 5, 2026 at 9:44 AM Adam Moffett <[email protected]> wrote: When we get big rectifiers installed, the low voltage guy is running a 350kcmil to the MGB. 350kcmil is about 7/8" diameter including the jacket. It feels kind of silly to have that on the bus bar and have a #2 to earth, but I'm told this is normal. What's the point of having that anaconda from the rectifier to the bus bar? These are GE Infinity systems by the way. 16KW to 32KW systems. -Adam -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
