Before you submit an error, please consult our Video Help page. Steve Trash Science is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android ...

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

Courtesy of www.MikeHolt.com. Based on the 2020 NEC. Article 725 of the National Electrical Code (NEC) covers remote-control, signaling, and power-limited circuits that are not integral to a device or ...

Watch this video to learn more about what an electrical circuit is and how it works. Electrical energy flows around circuits which are loops made of metal wires. In this game, touching the wire with ...

Circuits that fall under the requirements of Art. 725 are remote-control, signaling, and power-limited circuits that aren’t an integral part of a device or appliance. Article 725 includes circuits for ...

Electrical components, like motors close motorA device which spins when current flows through it. Motors are used in fans, food processors and many other devices. and lamps close lampA component which ...

Electrical circuits and systems lie at the very heart of modern technology, underpinning applications that range from power supply units and embedded systems to high‐speed communication networks and ...