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Electrical Inspections Contains discussions about electrical systems. This includes receptacles, panels, wiring, etc.

 
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  #1  
Old 7/15/11, 6:27 PM
Kenneth R. Brittain Kenneth R. Brittain is offline
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Default heat pump Service disconnect

Need some help with a service disconnect. Is a handle tie required for the two outside breakers? The hot lines feed the bus bar on each side. and the wiring is such that one line to each unit is tied to the center breaker which has the handle tie?
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  #2  
Old 7/15/11, 6:58 PM
Jim Port Jim Port is offline
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Default Re: heat pump Service disconnect

I don't understand what is going on in that box. The disconnect would only need to be a 2 pole. What are the outside poles feeding?
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Old 7/15/11, 7:08 PM
Kenneth R. Brittain Kenneth R. Brittain is offline
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Default Re: heat pump Service disconnect

there are 2 units, one unit is connected to an outside breaker and on side of the double pole breaker in the middle. The other unit is connected the remaining outside breaker and the other side of the middle breaker.
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Old 7/15/11, 7:43 PM
Jim Port Jim Port is offline
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Default Re: heat pump Service disconnect

In that case both legs would need to be disconnected at the same time. The easy solution would be to use 2 two pole breakers. The existing breaker would need to go left or right one space.

Correction, with this panel, shifting the breaker would not work.

Last edited by Jim Port; 7/16/11 at 9:59 AM..
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  #5  
Old 7/15/11, 7:55 PM
Kenneth R. Brittain Kenneth R. Brittain is offline
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Default Re: heat pump Service disconnect

Yes but that would put both lines feeding the heat pump on one incoming line. do they need to be on alternate incoming lines to be in phase?

The blue wires are for a power company load control
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  #6  
Old 7/15/11, 10:16 PM
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Sean Fogarty Sean Fogarty is offline
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Default Re: heat pump Service disconnect

Quote:
Originally Posted by kbrittain View Post
Yes but that would put both lines feeding the heat pump on one incoming line. do they need to be on alternate incoming lines to be in phase?

The blue wires are for a power company load control
The blue wires were also double tapping the connections. Which should be corrected. A wire nut and pig tail would correct the issue. As for the connecting bar, I would think it should not matter if the wires are sized properly. All panels work this way so installing two breakers side by side should be fine. The tie bar may prevent tripping if it interferes with the center breaker.




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  #7  
Old 7/18/11, 6:15 PM
Kenneth R. Brittain Kenneth R. Brittain is offline
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Default Re: heat pump Service disconnect

The Homeowner call an electrican. They said the breakers could not be moved over one position and installed a new box, problem solved.
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