What wire size is needed for 240v 30 amp load for 200 feet?

Answer 1

Your service provider will give you that information The size will depend on: A) how close to the transformer are you. B) copper or aluminum C) Yes, you have a 400amp service but what will your actual peak amp usage be. D) Underground or overhead.

Answer 2

You need to refer to the wiring regulations that apply in your country.

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Answer for USA, Canada and countries running a 60 Hz supply service.

A 3/0 copper conductor with an insulation factor of 90 degrees C is rated at 210 amps. Because the wire is a motor feeder the electrical code requires it to be sized at 125% of the motors full load amperage. 210 x 125% = 263 amps. A 250 MCM copper conductor with an insulation factor of 90 degrees C is rated at 265 amps.

Answer 3

For a 5% volt drop of 11.5 volts the total resistance should be 11.5 / 200 ohms, or 11.5 (200 x 900) ohms per ft for a twin cable, which is 0.000064 ohms per ft. The cable size is 3/0 (US) or 80 sq-mm (Europe).

Answer 4

Direct burial wire or cable set is governed on the insulation thickness. Direct burial of wire or cable, to code, must have two inches of sand above and below the wire or cable set. A marker warning tape must be placed one foot below grade, above where the wire or cable set is buried. There are three types of cable sets for direct burial, ACWU, NMWU and Teck cable.Now to answer the question, this is a voltage drop question.

A 4/0 copper conductor or a 300 MCM aluminium conductor will limit the voltage drop to 5% or less when supplying 200 amps for 450 feet on a 240 volt system.

Answer 5

For a 240V 30A load at 200 feet distance, you would typically use a #10 or #8 wire size to account for voltage drop over the distance. Consult a local electrician or building codes to ensure compliance with regulations.

Answer 6

A 3/0 copper conductor will limit the voltage drop to 3% or less when supplying 200 amps for 450 feet on a 480 volt system.

Answer 7

Parallel 1000 MCM copper conductor will limit the voltage drop to 3% or less when supplying 600 amps for 450 feet on a 240 volt three phase system.

Answer 8

#10 wire.