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ByDave Rongey © Ask the Electrician 2017 Author, Licensed Electrical Contractor

Calculating Voltage Drop for an Electrical Circuit

I need a 20amp feed 700 feet away from the service. What size wire should I use…

Calculating Voltage Drop for an Electrical Circuit
Background: Frank, a Homeowner from Sarasota Florida
Question: Per my friends farm. He needs a 20amp feed 700 feet away from the service. What size wire should he use?

Or, should he use a boost up transform then a drop down transformer at the load (oh it’s 120voltage.
If you think the transformer, what size, and what size wire. Thanks

Dave’s Reply:
Thanks for your electrical question Frank.

The Following links will assist you with your electrical question:

Electrical Calculations

Electrical Codes for Services
Wiring Electrical Codes

Electrical Wire for the Home

This link is helpful as a Homeowner
Do-It-Yourself Electrical

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