This panel has no 240V loads, just 6 120V circuits. The two on the top are 20A, the other 4 are 15's. There's a panel in the basement that feeds this one, and then in turn feeds another upstairs. Theose other ones have the 240V breakers for the range and such.
Re: Federal Panel circa 1950s#151756 10/28/0612:26 PM10/28/0612:26 PM
I believe 60 amp services started coming in during the 1920's when they started grounding the neutral and prohibiting fusing the grounded leg. I have seen a 100 amp round meter socket, deeper and larger lugs than the 60 with two 60 amp panels connected to it. This was installed right after WW II when alterantive materials were not available. The 1959 NEC was the first edition to require 100 amps based on calculated load, and / or number of circuits. There are still twelve 120 volt 30 amp services in operation in my city. (and I know where they are ) Alan--
Alan-- If it was easy, anyone could do it.
Re: Federal Panel circa 1950s#151758 10/29/0601:52 PM10/29/0601:52 PM
Yeah I've ran into a few old abandoned houses out in the country that I think still have their older model fuse boxes....one in particular I think was maybe a 30 amp service....I took a pic but I don't have access to it at this time...but the fuse box was located outside on the front porch just below where the meter once was...I want to say it held 4 fuses, the round light bulb glass style fuses...but I didn't look to see which legs were fused and which were not.
Were homes equipped with 60 amp service centers before the days of electric ranges and electric dryers? Is that when/why the 100 amp came out....because of electric ranges and electric dryers being introduced?
Re: Federal Panel circa 1950s#151759 10/29/0609:29 PM10/29/0609:29 PM
Our old place was wired in 1952, has a 4+range fusebox, 50A main on the pole. Its original wiring is mostly intact. Over the years a range was added (to the pull), and four pony boxes (two pole edison fuses + switch), each for water pump, dryer, water heater, and a baseboard heater (500W though).
Re: Federal Panel circa 1950s#151760 11/03/0612:18 AM11/03/0612:18 AM
Minimum Size.Service entrance conductors, including the conductors of underground services, shall not be smaller than No. 8 except for installations consisting of a single branch circuit, in which case they shall not be smaller than the conductors of the branch circuit and in no case smaller than No. 12.
Rating of Service Switch.A service switch shall have a rating not less than that of the fuseholder in series with it. Except by special permission, a 30-amp. switch shall not be used for any two-wire service supplying more than two 15-amp. branch circuits.
(FPN) It is recommended that a service switch have in all cases a rating not less than 60 amp. and a service circuit breaker not less than 50 amp.
A few weeks back, I retired a two-wire service with #8 conductors. It had Stab-Lok equipment, so I assume it dated to the '50s.
[This message has been edited by yaktx (edited 11-03-2006).]