The electrical current to the home is divided into individual branch circuits controlled by a circuit breaker. home has multiply breakers. Breakers are rated 15 amp,20 amp,30 amps,40 amps,50 amps,60 amps, and so on. The breakers form the starting point of the branch circuit and receptacles, light fixtures, appliances that receive power throughout the home. The breakers protect the home from overheating wires and if the breaker gets too hot and the wiring is the correct size for the breaker than the breaker should trip
Branch circuit wiring types
Copper wiring has been around a long time and is still used today in home and other areas.
Aluminum single-stranded wiring expands and contracts more than copper wiring. Because of the aluminum wiring expanding and contracting so easily with temperature changes, a connection can become loose over time leading to overheating causing a potential fire hazard. Aluminum corrodes more easily and its connections are more prone to oxidation eventually causing loose connections. The aluminum wiring is also a lot easier to damage or nicked due to the aluminum being softer. and malleable. Aluminum wiring has a higher electrical resistance all these traits of aluminum wiring create a potential for fire hazards.
Read more about aluminum wiring hazards at the Consumer Product Safety Commission (CPSC). If you have aluminum wiring here are some signs you may want to look out for warm or hot faceplates, flickering lights, and the smell of burning plastic. If these conditions exist I would recommend an Electrician that is qualified for aluminum wiring to evaluate, because homes with aluminum wiring have a greater potential of becoming a fire hazard than copper. also if aluminum wiring is present in your home Would recommend regular inspections of the electrical system by a licensed electrician who specializes in aluminum wiring.
Use in late 1800s to around 1940 issues with this type of wiring is the age, improper modifications, no ground, the insulation that envelopes the wiring is a fire hazard. The wiring may sag over time.