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Mike
Mike, Master Electrician
Category: Electrical
Satisfied Customers: 2742
Experience:  Licensed Master Electrician - OnQ Certified Data Voice Audio Video Installer
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Replacing Heat pump disconnect box - 60 A 240 V . Wires from

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Replacing Heat pump disconnect box - 60 A 240 V . Wires from heat pump and from main breaker are the same color. How do i determine which wire is which?

Mike :

Hi. Thanks for posting your question on JustAnswer...

Mike :

Do you have a black, white, plus a bare copper or green from each? Or what do you have exactly?

Customer:

two black wires and ground

Mike :

I see... it doesn't matter. Both blacks are hots. There is no neutral there so there is no polarity to worry about. Just connect the blacks to a black and then the ground to ground and you'll be fine.

Customer:

lol - thats too easy

Customer:

ok thanks

Mike :

No problem... it's better to be safe than sorry. $15 is a lot cheaper than a new A/C.

Customer:

yes i appreciate it

Customer:

bye

Mike :

Have a good day.

Mike and 3 other Electrical Specialists are ready to help you
Feel free to post back if you have any follow-up questions. Thanks!

Edited by Mike on 11/7/2010 at 7:49 PM EST
Customer: replied 6 years ago.

Thanks. The box didnt clearly identify the line and load connections. Once I figured that out it worked fine. Thanks again

Thank you!