Well finally ran into something interesting at work. not the same old MC and PVC.
This vintage 1960's service is supplied by POCO at 240V 3phase 3wire corner delta. And from a pad mount XFMR!! I always thought those went back to pole tops.
Anyway, the contractor has Sq D service equipment. I think it's a QED type, this is by phone call. According to Sq D bulletin QED boards are listed for use on corner grounded systems.
Has anyone hooked one of these up recently or at all???
I'm curious about the bonding provisions for the grounded phase.
Are they right there just as in a 4 wire board???
Is there an extra part or kit you need to order.
I want to be able to tell this guy some good info.
I am going to look at it tomorrow.
Thanks guys

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Larry LeVoir
Inspector
City of Irvine,CA


Larry LeVoir
Inspector
City of Irvine, CA