Why circuit breakers trip and fuses blow?

When there is an overload of appliances that is when circuit breakers get tripped off, as every circuit is designed to carry a particular amount of load based on the wires in the circuit. Hence, the breaker or fuse is intended to trip or blow before the circuit wires can heat to a dangerous level. It takes 20 to 30 seconds before it trips off.

  • Short-circuit: this is a serious cause for breakers to trip, when a hot wire touches a neutral or the metal case covering the circuit box, this causes an unimpeded flow of electricity within the breaker causing it to trip
  • Arch Fault: this occurs when there is a contact between two wire points in a connection either caused by loose screw terminals in a switch. An arc-fault circuit interrupter senses the wiring problem before it leads to a short circuit.
  • Ground fault: Ground fault happens when a live wire comes in contact with a ground wire or metal frames or walls which are very dangerous in areas that are moist such as bathrooms or kitchens.

For more information or assistance during normal business hours, call or e-mail TPS at the phone number above. You can also complete and submit our Service Project Inquiry form.