answersLogoWhite

0

What else can I help you with?

Continue Learning about Electrical Engineering

Draw and explain the operation of fault voltage ELCB and residual current device?

ELCB means Earth Leakage Circuit Breaker -- it is used to trip the Circuit breaker if any leakage fault occured means


What does the lights on the GFCI outlet mean?

It means the breaker has been tripped. There are two possible ways to reset it - some have a button on the outlet (there may be several outlets on one circuit, so you may have to look around) the other is the main breaker in your breaker box. You'll need to find a reset the breaker.


What is 'trip free' feature in circuit breakers?

It means that when the breaker is switched "ON" using the push button and simultaneously a fault occurs, the breaker will trip even if the push button is still being held in "ON" position.


What is the margin of safety with selecting circuit breakers?

The NEC requires that if the intended rating of a circuit corresponds to a standard size breaker then that size breaker must be used. In most instances, "rating of a circuit" means the intended connected load plus 25%. If the intended rating of a circuit does not correspond to a standard size breaker, you can go up to the next standard size without any other adjustments. In most circumstances, besides what I've already stated, a 14 gauge copper wire cannot be connected to a breaker larger than 15 amps, 12 gauge copper to a 20 amp breaker, and 10 gauge copper to a 30 amp breaker.


What is the meaning of 200AT-250AF in circuit breaker?

Oh, dude, 200AT-250AF in a circuit breaker is just the current rating and voltage rating. The "200AT" means it can handle up to 200 amps of current, and the "250AF" means it's rated for 250 volts. So, like, it's just telling you how much juice it can handle without blowing a fuse.