386 is probably the right article for their outlet boxes. I can hand one to the tile guys before putting in a residential bathroom and end up with a nice grouted in steel box to put a GFCI into. Tilers manage to end their work right on top of my outlets more often than not, and this provides a nice extension.
380 for the mulitoutlet strips. Have only used the T&Bs. Good for work benches if they're well protected.