What AMP and Wire size Breaker for a 2000Watt /120volt ELECTRIC WATER heater

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Roccero, Mar 26, 2020.

  1. Roccero

    Roccero New Member

    Joined:
    Mar 26, 2020
    Location:
    Arizona
    The water heater has only one element just need to know the info for breaker and wire size would truly appreciate it ..
     
  2. Bannerman

    Bannerman Well-Known Member

    Joined:
    Mar 19, 2014
    Location:
    Ontario, Canada
    A 120-volt water heater usually is equipped with a 1125 watt element.

    If your heater has a 2000 watt element, the amp draw can be easily calculated.

    2000 / 120 = 16.667 amps.

    It appears at minimum, a 20 amp circuit will be required. The usual wire size for up to 20 amps is 12 AWG copper wire.

    Since code often requires the wiring to be sized for 125% of the continuous load, this would then require #10 wire and a 25 amp breaker.
     
    Last edited: Mar 26, 2020
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