Article 400 And Generator

[Seven-Delta-FortyOne]

Got a customer who wants to connect a skid mounted Multi-Quip as a home standby. It will be manual start and manual transfer.

I usually use Type W and cam locks to connect these, but it’s usually temporary.

The generator does not have a provision for securing LFNC to the connection box.

I would say both “uses permitted” and “uses not permitted” in Article 400 could be a gray area for a permanently-connected generator.

Subject to physical damage is not an issue for this install.

What thinks the community?

 

[augie47]

If it's permanent connected I would say it would be prohibited by 400.12(1) although I guess it might be argued as not "part of the structure"

 

[Seven-Delta-FortyOne]

Biggest one that jumped out at me. On the other hand, the generator is designed for that type of connection, and maybe 400.10(7) comes into play?

 

[Birken Vogt]

Biggest one that jumped out at me. On the other hand, the generator is designed for that type of connection, and maybe 400.10(7) comes into play?

400.10(7) is the catch all for all kinds of generator installations, and it actually has more bearing than you might think.

I used to hook up a lot of indoor stationary generators, and any normal way you could think of to connect conduit to the box would be shaken to pieces in short order, and the resulting sharp metal start sawing its way into the conductor insulation.

I eventually settled on Appleton compression glands around type G or GGC or W multiconductor cable assemblies, run some distance to something that does not move.

400.10(8) would be another good reason.