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Q&A Issue in Cable Sizing and control cable selection

Hi All, I have a query regarding the cable sizing and motor starting. I have a 200HP motor to feed Low voltage power @480V. The distance between the substation and the motor is 2000m. Voltage dro...

1 answer · posted 3mo ago by AKKIIK‭ · last activity 3mo ago by Olin Lathrop‭

Question cable voltage-Drop Cable-Selection

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AKKIIK‭ · 2024-09-07T10:06:34Z (3 months ago)

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Issue in Cable Sizing and control cable selection

Hi All, 

I have a query regarding the cable sizing and motor starting.

I have a 200HP motor to feed Low voltage power @480V. The distance between the substation and the motor is 2000m. Voltage drop limitations are 5% normal and 15% Starting. Control voltage is 120V.

Query 1. 

What could be the size of power cable. What if I use intermediate Junction boxes.

Query 2

How could we do the control cabling as the length is quite long. due to which voltage drop in control cable will not pick up the control coil.


Does someone faces such issues?

cable voltage-Drop Cable-Selection

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