how choose conductor &caple&wire depending upon the load
Answers were Sorted based on User's Feedback
Answer / ccic
Cable/wire , i.e. the conductor should be rated for at
least 125% of the FLA. The upstream CB protecting this
conductor should also be rated similarly, i.e. for a load
with 100A as FLA, the cable should be able to carry at
least 125 A. The cable derating factors (type of cable,
type of installation, ambient condicions, Voltage Drop etc)
should then be used to select the ACTUAL cable. The CB
should be rated for 125 A (Instantaneous Trip setting)
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / k.p.sharma
Size depends on two things
1. Current rating normally load current should be 70-80% of
cable's minimum capacity.
2. Voltage drop should be within limit i.e. for lighting 3%
and for motor during starting within 10%.
Is This Answer Correct ? | 4 Yes | 9 No |
we have one pumping station and 4.6 MW 7 no.s synchronous motors.so there is no required HT capacitor to improve power factor.But we have two no.s of 25 Mva power transformer connect to distribute the power for motors connect with 220 kv line.So i have required the HT capacitor to improve power factor at HT side i mean power transformer bus side.So please suggest how much HT capacitor banks required for same.
Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?
A 200W,230V lamp is connected across 115V supply.The lamp will draw power?
Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??
how we calculate the withstansing current capacity of wires&cables?
what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?
What should be the earth pit resistance value?
40 HP motor how many square mm size wire use for stator to motor & aluminium wire use ?
how does a tube light choke working?
AVR is used for the Voltage regulation of the Generator using the feedback signal by exciting the field winding of the generator.But how the field winding will be excited & using what?
Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A
Define ohm’s law for a.c (alternating current)?