Do you know the facts about circuit protection, or have you just been relying on what you hear around the shop? As an electrical contractor, system designer, plant electrician, or electrical inspector ...

The overcurrent protection requirements outlined in the NEC can be found in Art. 240, except as noted in Table 240.3. As we noted in Part 16 of our series on Electrical Services, the requirements for ...

Most AC-DC power supplies and DC-DC converters have internal current-limiting circuits to protect the power device, and to some degree its load. The majority of over-current-protections include an ...

Once an engineer has designed the audio circuit of an amplifier, it would be nice to think that most of their task is complete. However, from a system perspective, that is far from true. At the very ...

For a PDF verion of this article, click here. Where resettable overcurrent protection is a requirement, PolySwitch polymeric positive temperature coefficient (PPTC) devices offer a highly effective ...