If a protective device rating is marked on an appliance, the branch-circuit overcurrent device rating shall not exceed ___ % of the protective device rating marked on the appliance. Article 422 covers ...

A. Branch-circuit overcurrent devices must have a rating of not less than 125% of the continuous loads, plus 100% of the noncontinuous loads [210.20(A)]. Note: See Sec. 210.19(A)(1) for branch-circuit ...

From traditional fuses to eFuses, understanding the advantages, limitations, and use cases of each technology helps engineers create reliable, space-efficient, and standards-compliant consumer ...

Often, little things make a big difference in a successful design. When it comes to telecommunications equipment, the incorrect specification of a circuit breaker can lead to unnecessary system ...

The usual way of preventing a small motor from drawing too much current is to install overcurrent protection in the form of a circuit breaker or some other kind of limiter. But installations that ...

I continue to be surprised by how many equipment designers are confused by UL circuit protection standards. In trying to meet conflicting standards, engineers may actually decrease the level of ...