Churning with voltage and resembling an explosion at the wire factory, the breaker panel exudes mystique. But it's just a big switch, filled with other smaller ­switches, which lead to the switches ...

Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1. This is why it’s so important for ...

To make something work using electricity there needs to be an electrical circuit; a circuit is a complete loop that electricity can move around. Electricity moves from the power source (the battery or ...

All sorts of things can happen to cause power outages – trees can contact aerial utility lines, vehicles sometimes strike poles, birds and squirrels can make the wrong move and trip electrical ...

A circuit breaker is a programmed automatic electric switch, which is utilized to protect an electrical circuit from damage by excess current. The basic function of circuit breaker is to stop the flow ...

In the first part of this electrical troubleshooting series, we discussed how a consistent approach to electrical troubleshooting can help HVAC technicians get a comprehensive assessment of what is ...

Cities and towns worldwide areconsidering and installing LEDstreetlights to help save electric energy,reduce costs, protect the environment,and improve lighting for their citizens.Despite this trend, ...