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Old 05-17-2008, 05:28 PM
Fritz Kelly Fritz Kelly is offline
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A/C Disconnect?
Would this count as a proper disconnect on a roof mounted heat pump? It is the only disconnect and you have to remove the front panel screws to access it.
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Old 05-17-2008, 05:57 PM
James Duffin James Duffin is offline
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Re: A/C Disconnect?
Since it is a service disconnect it looks ok to me.
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Old 05-17-2008, 06:24 PM
Markus Keller Markus Keller is offline
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Re: A/C Disconnect?
I doubt it. You have to stick your hand into the equipment with live power in order to turn the power off. I'd write it up as un-safe.
I'll see if I can find something in the NEC and post.
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Old 05-17-2008, 07:36 PM
Randy Clayton Randy Clayton is offline
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Re: A/C Disconnect?
No a electrical disconnect needs to be outside of the unit
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Old 05-18-2008, 07:31 AM
Markus Keller Markus Keller is offline
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Re: A/C Disconnect?
James, I'm looking in the NEC haven't found anything applicable yet.
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Old 05-18-2008, 08:26 AM
Markus Keller Markus Keller is offline
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Re: A/C Disconnect?
James, I looked under NEC 08 424, 430, 665 and various other portions of text. I can't actually find anything that disallows that disconnect based on location.
I guess you're right about this one, unless of course ECJ shows up with his crystal ball of knowledge.
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Old 05-18-2008, 10:36 AM
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Billy Stephens Billy Stephens is offline
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Re: A/C Disconnect?
Quote:
Originally Posted by Markus Keller View Post
James, I looked under NEC 08 424, 430, 665 and various other portions of text. I can't actually find anything that disallows that disconnect based on location.
I guess you're right about this one, unless of course ECJ shows up with his crystal ball of knowledge.
.

05 NEC 440.14 Disconnect cannot be mounted on access panels. Disconnect in line of sight.

IRC06 T40001.5 & 40001.5.
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Old 05-18-2008, 04:55 PM
Jerry Peck Jerry Peck is offline
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Re: A/C Disconnect?
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Would this count as a proper disconnect on a roof mounted heat pump?Attachment 6272

No.

It needs to be separate from the unit.

How many residential a/c condenser or heat pump units have you seen which do not have all panels removable for servicing?

On large commercial units, there typically is a large frame, with some panels removable, some not, and the disconnect could be mounted on the large frame or on a non-removable panel.
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Old 05-19-2008, 07:07 AM
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Robert Dalga Robert Dalga is offline
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Re: A/C Disconnect?
No, obviously not. What if you needed to replace the unit (you would have to kill the power from the main, then disconnect the lines and remove the unit...leaving improperly terminated conductors exposed (so you would then have to install a proper disconnect).
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