As a manufactured “appliance” I don’t think the NEC applies to anything inside the box. Sent from my iPhone
> On Feb 13, 2026, at 4:52 PM, Adam Moffett <[email protected]> wrote: > > > This post is part question and part whining. > > Yesterday I got a look at a manufactured network enclosure from a fairly > large company. They have a load center built in, and the feeds to the > rectifier are THHN in wire loom. They bring that into the load center with > NM box connectors. > > I want to believe that they wouldn't sell something to us for $30,000 that > wasn't up to electrical code, but > I have never seen that done before, and neither has our electrician > It doesn't make me feel like I got $30,000 worth > > Does anyone know if this is actually square with the NEC? > > Even if it's legally ok, how does it make any sense? > > <image.png> > > <image.png> > > > Weird thing #2: > > The installation guide says to bring our incoming utility power through the > knockout shown here under the load center. The one next to it with the > rubber passthrough is for a ground to the equipment MGB. It's a ¾ knockout, > and I added a picture of the bottom side to show that it's not one of the > expandable ones. The main breaker in the load center is 100A. Normally you'd > want a 1-1/4 knockout for a 100A service. I struggled to think of some > creative way to get 100A through a ¾ conduit and still be compliant, but I > got nothing. I think we'll have to remove the factory breaker and install a > 50A. It's either that or bore a 1.7" dia hole somewhere, and while I do > enjoy cutting up metal I don't think I should have to. > > <image.png> > > <image.png> > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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