Circuit breakers are manual switches that open under overload conditions. Circuit breakers discussed here are general-purpose types that meet the minimum Underwriters' Laboratories Inc. (UL) standards ...

Whether you're replacing an old circuit breaker or adding a section to safely power a new appliance, here is an idea of how much it will cost you.

Confusion abounds over the use of tandem circuit breakers in panelboards, even among electricians and electrical inspectors. Today I'll set the record straight as to when tandem circuit breakers can ...

Figure 1. Two-pole circuit breakers interrupt both neutral and hot wires (Click to enlarge). Figure 2. A typical combination switch and circuit breaker for medical equipment. Figure 2. A typical ...

This is the second part of a two-part series on the methodologies used to find the short circuit current duties of circuit breakers and fuses. The first part, Short Circuit Current Duties of Circuit ...

As noted in NFPA 70B, insulated-case and molded-case circuit breakers should be kept clean of external contamination (Comstock/Stockbyte/Thinkstock). Low-voltage ...