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Joined: Mar 2005
Posts: 5
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I have a 120 volt line in running in conduit for the pump. i have a low volt alarm wire that that i want to put in the same conduit as the 120 volt pump feed . im going to use the same wire and gauge for both can i put both wires in the same conduit? this is for a septic pump and high water alarm . thanks for any help you can offer
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Joined: Jan 2003
Posts: 1,429
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Joined: Mar 2003
Posts: 849
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300.3c Read FPN See 725.(A) for class 2&3 circuit conductors if control wires not class 1.
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Joined: Jul 2004
Posts: 9,930 Likes: 34
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Just remember you made the "low voltage" signalling circuit a 725 class 1 when you put it in there with the line voltage so you pretty much treat it like line voltage.
Greg Fretwell
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Joined: Mar 2003
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Difinitions Class 1 725.1. Class 2 & 3 725.41 Putting a Class 2 circuit in with a line voltage Does Not make it a class 1. Read 725.55 Thats the Reason for the FPN.
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Joined: Jul 2004
Posts: 9,930 Likes: 34
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I don't see any reason why you can't treat a class 2 circuit as a class 1 if you wire it all to class 1 standards. All the voltage/current limits I see in the definitions are upper limits, not lower ones. If anything in that circuit is not appropriate for a class 1 you can't do it.
[This message has been edited by gfretwell (edited 08-09-2006).]
Greg Fretwell
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Joined: Mar 2003
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752.52 A exception #2 I belive is what you are referring to. But even there it states you must comply with Part 2 Class 1 circuits.
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HCE727
Delaware County, PA, USA
Posts: 187
Joined: November 2005
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