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Wade Johnson
08-31-2011, 07:01 AM
In what year did they start using 150-amp main breakers?
Jerry Peck
08-31-2011, 01:49 PM
What year did they start using breakers in your area?

Trying to figure out what you are really asking and why.
Wade Johnson
08-31-2011, 01:58 PM
The house is 1966, trying to figure out if there has been an electrical upgrade. Panel is GE
Jerry Peck
08-31-2011, 02:02 PM
Mostly fuses into the 1950s and some into the 1960s, but some breakers in the 1950s too. So going with a breaker in the 1960s would be logical.

Size-wise, the 150 amp would not be uncommon, no different than 150 amp fuses.
Wade Johnson
08-31-2011, 02:10 PM
Thank you