Sixty amps was a generous service in 1957. It fed a range, a few lights and a washer. Today the same house may carry central air, a dryer, a dishwasher, a microwave and two bathrooms with hair dryers. So the main fuse blows on the first hot afternoon of July, and the calls start. A 200-amp service with a breaker panel is the standard fix, and PECO resets the meter when we finish.
Fuse boxes bring a second issue. Someone, at some point, may have replaced a blown fuse with a bigger one. Now the wire behind it can overheat before anything trips. We check the fuse ratings against the wire on every visit.
Knob-and-tube remnants and ungrounded outlets round out the list. Some runs still carry power in attics and behind plaster. Two-prong outlets get a real ground or GFCI protection. We work in Horsham, Willow Grove and Dresher on the same days, in the same vans. Call 215-227-7000 and describe what you see.