Maybe you have been confused in what the markings on circuit breakers suggest? Knowing the markings on electric gear is significant must make sure a safe and reliable installation that is electrical. Circuit breaker marking demands are founded by the needs based in the NEC therefore the UL 489 product standard. This informative article will discuss the many typical markings and where they could be discovered.
The datingmentor.org/fdating-review/ UL 489 product standard for Molded Case Circuit Breakers specifies the given information to be marked on circuit breakers and where it really is become situated, so let’s talk about what information has to be marked in the circuit breaker and also the location where you will discover those markings. Bear in mind the UL® standard specifies minimal demands. Circuit breaker manufacturers might provide extra information or offer information in an even more location that is convenient.
Markings Visible without Eliminating Trims or Covers
UL 489 requires that some markings be noticeable without eliminating trims or covers. This location is usually named the handle escutcheon (see picture 1).
Picture 1. Markings visible with trims or covers in position
Markings Visible with Trims or Covers Removed
UL 489 requires other markings be noticeable for an installed circuit breaker with trims or covers eliminated. This location is normally described as the real face for the circuit breaker (see pictures 2, 3, 4). Continue Reading