what is the difference in using the 125% and the 250% factor of safety in calc

what is the difference in using the 125% and the 250%
factor of safety in calculating circuit breakers capacity
for motors,which is more reliable to use the 125% or 250%??

Question Posted / jaycee

1 Answers
4546 Views
I also Faced
E-Mail Answers

what is the difference in using the 125% and the 250% factor of safety in calculating circuit brea..

Answer / wareagle

You are not required to use 125% for motors. The NEC says
that the breaker rating can be up to 250% of the motor FLA.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

Ammeter of 1 ohm resistance measure max 10 ohm to measure higher resistance from it

6 Answers BARC,

What is difference between isolator and circuit breaker?

0 Answers

resistance of transformer oil=?

1 Answers HCL,

how to calculate power factor of capacitor? what is transformer rating?

2 Answers

Why let through energy not considered for ACB breaker while cable sizing?

0 Answers

Please give me a solid reason there are 2 ELCB's If we take Phase from ELCB NO:1 an Netural from ELCB N:2 why ELCB is tripping when we connect the Load?please brief me with detail

3 Answers

how many by pass system in online UPS.

4 Answers

how does a tube light choke working?

2 Answers

why to use 50hz only in tansmisson and as well as in distribution why not60hz?

2 Answers

i have 2kv ups how many watts batteries is required

2 Answers

What is meant by operating sequence of VCB : 0–0.3sec.–CO– 3min.-CO

2 Answers

which types of relay used in acb and vcb?

0 Answers IBM,

For more Electrical Engineering Interview Questions Click Here