(See Figure 4, page 20.) This wiring diagram shows 120 V coming from L1 of a circuit breaker, through a switch, powering a boiler control and returning through L2, back to the neutral bar of the ...

Anyone who's lived in a home or apartment has probably heard the terms "fuse box" or "circuit breaker" before ... Within the fuse is a small length of wire filament, usually encased in ceramic ...