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Electrical Code for 4-Wire Dryer Circuit

Where does it specifically state the change from 3wire to 4wire service?

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NEC Electrical Code for 4-Wire Dryer Circuit
Background: Tom, a Electrician from Great Lakes Naval training Center, Great Lakes, IL
[ad#block]Question: What article in the NEC discusses wiring a residential dryer? 208V, 30A

Where does it specifically state the change from 3wire to 4wire service?
Thanks!

Dave’s Reply:
Thanks for your electrical question Tom.
The NEC reference is article 250.142(B) which specifies a 4 wire 30 amp circuit.

The Following links will assist you with your electrical question:

Electrical Wiring

For more information about Dryer Wiring
Wiring a Dryer and Power Cord
Dryer Wiring
Dryer Wiring
See an electric dryer installation with a typical 220 Volt electric power cord wiring system. You may find yourself with either a 3-wire or 4-wire electric dryer, or a 3-wire or 4-wire outlet. Lets look a how the electric dryer is wired and what to do if your cord does not match the plug.

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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.


Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

More articles about 250.142 Dryer Circuit 4-Wire, National Electrical Code and Home Electrical Wiring:
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