Generally, the Art. 210 requirements for branch circuits are prerequisites for applying requirements found elsewhere. This fact is exemplified by the overcurrent protection requirements [Sec. 210.20].

In Part 1, we looked at how to size a branch circuit and walked through a simple example. So if you’re sizing a feeder, why don’t you do it the same way? Except in cases where a feeder is also ...

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 ...

Surge protection for an electrical panel controls how transient voltages enter and spread through branch circuits inside the ...

Zero Surge Inc. introduces the "FF1 Series" family of surge suppression products delivering branch circuit power-surge protection for commercial and industrial applications, including whole rooms, ...

My introduction to circuit protection came at the tender age of eight. Being a curious lad with an inventive – and apparently self-destructive – bent, I decided to make my mother a lamp. I put a hose ...

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 ...

Middletown, Pa. — Touch-safe fuse terminal blocks from Phoenix Contact accept Class CC and Class J fuses to meet National Electrical Code requirements for branch circuit protection. UL-Listed for ...

TO BE READ BY ALL ELECTROSCHEMATICS ENTHUSIASTS! Much needs to be said about this oft neglected subject. We would never even think of connecting the utility mains to our house without proper circuit ...

CARLO GAVAZZI has launched a new range of Miniature Circuit Breakers for up to 480Y/277VAC systems: GMB Series UL489 MCBs for Branch Circuit Protection and GSB Series UL1077 MCBs for Supplementary ...