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Electrical Wiring for a Water Heater Circuit


What type of wire should I use for a water heater circuit? How to Wire a Water Heater, Selecting the Electrical Wire for a Water Heater Circuit, Correct Wiring Methods are the Key to safe Electrical Circuits, 240 Volt Electric Water Heater Circuit.

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How to Wire a Water Heater

Wiring a 240Volt Water Heater
Electrical Question:What type of wire should I use for a water heater circuit?

Thanks, Richard

This home electrical wiring question came from: Richard, from Lakewood, California.

Additional Comments: Terrific web-site, which has helped me with a complete kitchen remodel, only 120 there, so I knew I could figure things out safely.

Dave’s Reply:
Thanks for your Electrical Wiring Question Richard.

Wire for a Water Heater

water heater circuit

Application: Wiring a 240 Volt Electric Water Heater.
Skill Level: Intermediate to Advanced, Best installed by a Licensed Electrical Contractor. Work in electrical panels is not recommended for homeowners, non-experienced individuals or non-electricians.
Tools Required: Basic Electricians Pouch Hand Tools, electric drill,  auger bits and extension cord as needed depending on the scope of the project.
Estimated Time: Depends on personal level experience, ability to work with tools and install 240 volt electrical circuit wiring.
Precaution: Identify the main circuit in the panel, turn it OFF and Tag it with a Note before working with the wiring or installing the 240 volt wiring and circuit breaker.
Notice: Installing an additional 240 volt circuit should be done according to local and national electrical codes with a permit and be inspected.

Wire for a 240 Volt Electric Water Heater

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Comments about this Electrical Project

3 Responses to “Electrical Wiring for a Water Heater Circuit”
  1. shirley cortez says:

    The circuit for my water heater is a dedicated circuit, I just need to be able to easily move it several times as I work in the laundry room, so I would like to be able to plug it in using the dryer cord as opposed to having it hard wired as it is now.

  2. Dave Rongey says:

    Hi Shirley,
    An electric dryer and electric water heater require dedicated circuits due to the amount of electrical power that is required by each separate unit. If the water heater were to be connected to the electric dryer circuit the circuit breaker would eventually trip off because the circuit would become overloaded when both units were running and consuming power at the same time. Therefore for our convenience and safety the electrical code requires that a separate circuit is installed for an electric water heater.
    Be Safe,

  3. shirlet cortez says:

    I live in Texas and would like to put my 40 gallon water heater in with a 30amp plug and receptacle normally used on a electric clothes dryer, can I do this? Don’t know if it’s allowed.