I'm an "at the transformer" guy but I'm sure there as just as many who prefer the first disconnect.Bonding preference:
@ the transformer?
@ the first disconnect?
Just curious on preferences / advantages / disadvantages to one vs. the other??
Bonding preference:
@ the transformer?
@ the first disconnect?
Just curious on preferences / advantages / disadvantages to one vs. the other??
I like the panel because of not having to separate the grounds and neutrals if you do it at the tyranny then you have to keep the grounds and neutrals separate at the panel.
Transformers are a separately derived system so you treat them like a service, not a sub panel even though they are in the same building.I always understood that after the first OCPD we separate the grounds & neutrals. Sub panels for example. Is Wayne's way to avoid parallel ground paths ?
Finally someone is with me on this!I like the panel because of not having to separate the grounds and neutrals if you do it at the tyranny then you have to keep the grounds and neutrals separate at the panel.
Bonding preference:
@ the transformer?
@ the first disconnect?
Just curious on preferences / advantages / disadvantages to one vs. the other??
In the case of a service transformer, IIRC, it only requires a single ground rod at/near the transformer... and there is no getting around it. Bonding is required both at the transformer and the service disconnects, and there is no supply-side bonding jumper (aka EGC) as the grounded conductor is used for bonding.I prefer the panel.
I recently had an install where the transformer fed 2 services 500 feet apart. In that case bonding at transformer would have increased cost substantially.