If you check out the electrical panel in your home, chances are you'll find you have circuit breakers. These are automatic devices that control the amount of electricity passing through specific parts of your house. If too much electricity flows into a circuit, the breaker automatically shuts down to prevent damage to the system.

In Mesa, Arizona, one of the circuit breakers was connected to a wire that was rated for less amperage than the breaker. This is called over fusing. It's a dangerous situation. Over fusing can cause wires to overheat, insulation can melt and that can result in an electrical fire.

• If breakers feel hot or frequently trip, cutting electricity to appliances, that's a sign of problems. Call an electrician if you suspect a problem with your circuit breakers.

• Once a year turn all circuit breakers off, then on, to clear the contacts of any corrosion. It's important that breakers are able to move easily, or they won't be doing their jobs.

If you suspect a major problem, never attempt to correct it yourself. The health and welfare of your circuit breakers is best left to a professional.