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 ...

Experimenting with batteries, bulbs, buzzers, switches and other electrical components is a great way to learn about circuits and start to think about how to incorporate sounds into your Build a ...

In the 120V circuits of homes and offices, the grounded conductor is the same as the neutral. Typically, when wiring a switch for a 120V load (e.g., a light) only one wire comes to the switch and only ...

Altech’s load-safe LSF Series and RT Series non-fusible motor disconnect switches and accessories de-energize electrical circuits for safe maintenance, repairs, inspections and emergencies. RS has ...

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 ...

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 ...

In a circuit panel, every circuit must be identified as to its specific purpose or use [as per Sec. 408.4(A) of the National Electrical Code]. This identification must be made: In a circuit directory ...