GFCI Circuit Breakers
Ground fault circuit interrupters (GFCI) are an effective means of preventing severe electrical shock. Learn where to buy Siemens GFCI circuit breakers here.
A GFCI circuit breaker, also known as a GFCI breaker, is a type of circuit breaker that provides Ground Fault Circuit Interrupter (GFCI) protection. It is often used as a replacement for standard circuit breakers and protects all receptacles on that individual circuit.
GFI WAREHOUSE is the leading wholesale supplier of Ground Fault Circuit Interrupters (GFCIs). You can buy GFCIs directly from them.
In a three-pole, 4-wires configuration, the following 30A-125//250V (NEMA 14-30) receptacle is wired and protected using 30A – 240V GFCI breaker. The following wiring diagram shows a hot water tub spa or whirlpool spa wired and protected through a 2-pole GFCI circuit breaker using a three-wire system (two hot wires, one neutral, and one ground).
Similar to the wiring diagram for a 1-pole GFCI circuit breaker, the built-in white wire on the back of the two-pole GFCI must be connected to the neutral bar in the main panel. The 2-pole GFCI should be installed in the two hot slots in the main panel. This configuration allows HOT 1 and HOT 2 to provide the 240V input supply to the GFCI.
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