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Papatrexas, Electrician
Category: Electrical
Satisfied Customers: 70
Experience:  I am licensed General & Electrical contractor for more then 35 years with 40 years experience in the construction industry.
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# Wire will be run from a house to receptacle in a garage 300

### Customer Question

wire will be run from a house to receptacle in a garage 300 ft away its used to supply current for a 1200 watt saw panel box is 120volts u r using #12 solid copper coated wire what is approx. voltage deliver to saw is it simply dividing 1200 by 120
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Submitted: 9 months ago.
Category: Electrical
Expert:  Papatrexas replied 9 months ago.

Hello my name is and I will be happy to assist you.

"voltage deliver to saw is it simply dividing 1200 by 120"

This is the calculation for Amperage witch is 1200/120=12 Amps

Customer: replied 9 months ago.
ok its asking what voltage is delivered to the saw
Expert:  Papatrexas replied 9 months ago.

what is the amperage of the saw?

If it is 12 Amp then you will have 5% =6V drop

corrected calculation

Expert:  Mike G. replied 9 months ago.

A #12 wire circuit 300 ft long will have a voltage drop of 19.2 %. This will provide 97V which is unacceptable. At that distance you'll need a #4 copper conductor for a 20A circuit.

Expert:  Papatrexas replied 9 months ago.

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