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Inactive, Master Electrician
Category: Electrical
Satisfied Customers: 4772
Experience:  Electrical Contractor
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i am connecting an electric 240v water heater. the 2 wires

Customer Question

i am connecting an electric 240v water heater. the 2 wires from the house circuit are black and white. the 2 wires from the heater are black and red. (plus ground obviously). i presume the black connects to the black and the white to the red. is this correct?
being 240, both are hot so it may not matter.
Submitted: 7 years ago.
Category: Electrical
Expert:  Inactive replied 7 years ago.
Thank you Sir or Madam for asking your question on Just Answer Electrical!
You are corresponding with JOSEPH - Your "Personal On-Line Electrical Consultant".

- Can you explain your situation a little more?

Is the existing wiring already connected to the breaker? If so tell me how its wired. Also can tell me what size breaker and what size wire you have installed?

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Friday, April 09, 2010 7:25:57 PM
Customer: replied 7 years ago.
30 amp breaker; #12 wire; white wire and black wire go to circuit; white wire does not go to neutral post. let me point out that i am replacing an existing heater and the house black wire was connected to the heater red wire and the house white wire was connected to the heater black wire. i thought this was odd. why not black to black?
Customer: replied 7 years ago.
i am willing to reply but i don't know what you want to know.
Expert:  Inactive replied 7 years ago.
Sorry for the delay - now the reason its done this way is because you only need two hots and a ground. Since you do not need a neutral with this kind of setup, the white will become your other hot. So all you need to do is hook up black to black, white to red and ground to the green terminal and you will be good to go.

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Friday, April 09, 2010 8:27:11 PM
Inactive and 3 other Electrical Specialists are ready to help you
Expert:  Inactive replied 7 years ago.
Thank you for "Accepting" my answer and allowing me the opportunity to help you with your electrical question. If you ever need anything further, please dont hesitate to ask. Please remember to BookMark my profile for your next electrical question.

Friday, April 09, 2010 8:48:15 PM