submitted by John C. Kernan CFI, CFEI & CFII, Chief Fire Marshal FM-272, Upper Makefield Township
It can happen anytime of the year, but it seems to happen most frequently around the holidays – the electrical outlets begin to put on additional weight! Outlets that normally carry a single plug for a light are now fed by multiple extension cords and surge protectors to power the 10 strings of lights for the tree, electric candles, CD player for holiday music, etc.
Overloaded outlets do cause fires, an estimated 5,300 annually and almost 2,000 occur during the holidays. Just how many things can you plug into an electrical outlet before it will catch fire? It helps if you have a basic understanding of electricity.
Most homes have 120 volts of electricity flowing through it at any given time. Somewhere in your home there is an electrical panel box containing either circuit breakers or fuses found in older homes. Circuit breakers and fuses act as a failsafe in the event of an electrical overload and they regulate the current. The current is expressed in amperes (amps) and most circuit breakers and fuses regulate at either 15 to 20 amps. If too much current is drawn from the circuit the circuit breaker or fuse blows, breaking the circuit to prevent an overload.
The problem is that circuit breakers and fuses aren’t always 100% reliable!
Another potential hazard occurs when more than one outlet is wired into a single circuit. If you check your electrical panel you may see a single circuit labeled “Heater” or “Washer/Dryer” and “AC Unit.” You may also find that all of the outlets in a single room are connected to a single circuit! What this means is that you don’t necessarily have to overload a single outlet to cause a fire!