|
Can Do | |
| Home Inspections Inc. | ||
| 3032 S. Paseo Loma Circle | ||
| Mesa, AZ 85202-7951 | ||
| Voice or Fax 480-831-6237 | ||
| Arizona Home Inspections By |
| Arizona State Certified Home Inspector #39760 |
| Arizona Board of Technical Registration Firm #11968 |
| How does a ground fault circuit interrupter (GFCI) work? | ||||
| Home Buyers Sellers Sample Report Pictures FAQs Email Us Electrical Index |
A GFCI senses the
balance of current in the circuit. As long as the same amount of current that
leaves the circuit breaker or supply buss returns to the neutral, the GFCI will
remain closed. If there is any current leakage in the circuit for any reason,
the GFCI will sense the difference and open the circuit. A typical GFCI will
open if there is .5 milliampere of current loss. (A milliampere is 1/1000 of an
amp). Electricity moves at the speed of light (186,000 amps). This allows
approximately 1/40,000 of a second for the GFCI to react. |
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