One main disconnect w/ 2 breakers to old panel and newer ('60's) panel ground quest.

[pinball]

Older late 40's concrete home with an addition in 1965. On the outside of the house, wires come in through drop to meter, then to a panel also mounted outside with two 60 amp main breakers. One set of wiring goes inside and feeds the original panel mounted in a closet, and the other feeds a panel installed circa 1965 through conduit mounted under the eves in a porch about 20' feet away.

The old part of the house is 2 wire. The new part is 3 wire. The "newer" panel was grounded at a water pipe, and the neutrals and grounds terminated at the same bus bar. It's been this way for 50 years. Is this correct?

 

[Dennis Alwon]

I am unclear of your situation but if it is the main panel then the neutral and grounds are terminated under the same bar. They get separated after the service disconnect.

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