As a side note to this sbject:
Had a no lights call in a shop ctr. Power was 'out' at 15-20 poles; all circuits in store on, contactors OK. ??? Started the trace process. Store mgr comes out & said ' we see smoke rising from the traffic island when the irrigation sprinklers are on' Hmmmm!
Traced a few circ. back to that island area, said OK, grab a shovel. Under 12" of mulch, a PVC box (30x30) with the cover concaved in.
Talk about major meltdown; cover crushed the conductors against the ruff PVC stubs & all heck broke loose, add some water & ??
BTW, manager guy said it was smoking for about two weeks, but he waited for a Friday at 3:30 to call HQ.
John
