how we can calculate cable size of 230v,1 hp single phase
motor ? panel to motor distance is 25 meter
Answers were Sorted based on User's Feedback
Answer / vaibhav v t
You can use 3 core x 1.5 sqmm copper cable.Upto 5 hp three
phase or single phase your can use this cable.
Is This Answer Correct ? | 15 Yes | 6 No |
Answer / abokamal
cable design.
first we have to choose CB.
(I)load=P/(V*PF)......... assume pf=0.8
(I)=746/(230*0.8)=4.1 Ampere
(I)cb=(I)load *s.f (FASETY FACTOR)=4.1*1.25=5.1 Ampere
(I)cable=(I)cb/D.F (DERATING FACTOR)=5.1/0.8=6.33 Ampere
from catalouge you can select the cable according to the
current.
you have to see (volt/ampere/meter) to see the voltage drop
limit which according to +-5%
Is This Answer Correct ? | 9 Yes | 1 No |
Answer / vipin
kamal is right ,after deciding the load current you ll have to consider the starting condition....
as per the IEEE regulations you ll have to consider 3 to 4 times the rated current as the starting current...as the rated current is coming around 6 amperes you can select a CB of 20A DP or SP. A 4sqmm cable will be std for the 1 hp pump.. you will have to verify with your supply company rules for the size of cable to be used for the designed value of circuit breaker.
Is This Answer Correct ? | 3 Yes | 2 No |
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