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What size wire do you need for a 200 amp 3 phase feeder?
Hello. I will be happy to assist you with your electrical question.
What is the 3-phase voltage and approximate distance?
480vac 400 ft
1) Calculating the voltage drop using a 200 amp load with 480VAC 3-Phase @ a 400 foot run results in 2/0 Copper with a 2.7% voltage drop or 13 volts
2) Calculating the voltage drop using a 200 amp load with 480VAC 3-Phase @ 400 foot run results in 4/0 Aluminum with a 2.5% voltage drop or 11.8 volts
3) Due to the distance, the use of 4/0 Aluminum will be more cost efficient than using copper conductors.
Hope this helps.........If you have any additional questions, let me know and I'll be glad to answer them for you.
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so would I need a 3c 2/0 cabal or what do you recommend I want to use copper
1) Nick..... 2/0 copper will work fine, but keep in mind that copper will cost more than aluminum does. I also prefer to use copper as much as I can. Was just trying to provide you with both options.
2) Either one will work as they are both under the recommended 3% maximum voltage drop.