220 Volt Hot Tub Circuit Wiring

Homeowner wants me to install a 220V hot tub. She said the run is about 220 feet..

Electrical Question from Mike about Hot Tub Wiring
Background: Mike, a Electrician from Pittsburgh, PA
Question: Homeowner wants me to install a 220V hot tub. She said the run is about 220 feet, and I did not have to drill holes as there is a duct. I have been working as an electrician for the past three years, and I know you can’t do a run inside a duct, you can tun through a cold air return, but as far as i know, you cannot run the length of a duct. Also, for the 220,Â should I use 6/3 with an insulated ground?

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

See:Â NEC 300.22 Wiring in Ducts, Plenums, and Other Air-Handling Spaces.

The wire size must be increased due to the length of the run.
The wire MUST be Copper.

The Following links will assist you with your electrical question:

Wire Size – Voltage Drop Calculator

220 Volt Wiring Diagram

Electrical Grounding

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Hot Tub Wiring

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Electrical Code Articles

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Home Electrical Wiring and Electrical Repairs

Please Note:
Unless otherwise posted, please refer to the following Guidelines when working on Electrical Projects:

Skill Level:
Intermediate to Advanced - Electrical Repairs and Circuit Wiring is Best Performed by a Certified Electrician or Licensed Electrical Contractor.

Electrical Tools Required:
Basic Electricians Pouch of Hand Tools, a Voltage Tester and a Multi Meter.

Estimated Time:
Depends on personal level experience, ability to work with tools, work with electrical wiring, and the available access to the project area.

Precaution:
Identify the project circuit, turn it OFF and Tag it with a Note before working with the wiring.

Important:
Modifying existing electrical circuits or installing additional electrical wiring should be done according to local and National Electrical Codes, with a permit and be inspected.