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    Washington1's Avatar
    Washington1 Posts: 798, Reputation: 36
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    #21

    Aug 8, 2008, 04:25 PM
    benaround,

    I see where you are going with this. When you read 250.140 ex3, make sure you note that you do not have to run a 4-wire circuit, if: The grounded conductor is insulated. It's not rare that people keep reading, but if you read the code as written, it says: 3)The grounded conductor is insulated, or the grounded conductor is uninsulated and part of a Type SE service-entrance cable and the branch circuit originates at the service equipment.

    Note: I believe you need to stop at the comma---which then permits you to have a 3 wire circuit from a subpanel (AKA non-service rated panel) as written in NEC 250.140 ex3
    benaround's Avatar
    benaround Posts: 69, Reputation: 6
    Junior Member
    		  
    #22

    Aug 8, 2008, 04:48 PM
    Quote Originally Posted by Washington1
    benaround,

    I see where you are going with this. When you read 250.140 ex3, make sure you note that you do not have to run a 4-wire circuit, if: The grounded conductor is insulated. It's not rare that people keep reading, but if you read the code as written, it says: 3)The grounded conductor is insulated, or the grounded conductor is uninsulated and part of a Type SE service-entrance cable and the branch circuit originates at the service equipment.

    Note: I believe you need to stop at the comma---which then permits you to have a 3 wire circuit from a subpanel (AKA non-service rated panel) as written in NEC 250.140 ex3
    I agree with you. I also think it would be hard to find a dryer circuit with an insulated

    Neutral conductor that did not also have an EGC as part of the circuit.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #23

    Aug 8, 2008, 04:55 PM
    Quote Originally Posted by benaround
    I agree with you. I also think it would be hard to find a dryer circuit with an insulated

    neutral conductor that did not also have an EGC as part of the circuit.
    I've seen quite a few. Mostly from the 50's. The old silver cloth NM cable was used quite a bit in 10/3 w/o ground.
    benaround's Avatar
    benaround Posts: 69, Reputation: 6
    Junior Member
    		  
    #24

    Aug 8, 2008, 05:24 PM
    Stanfortyman,

    That is the second time you asked me to look at that link. What's up? I haven't PM'ed

    Anyone, nor do I plan to. If you don't want my opinion on this site, just say so.
    stanfortyman's Avatar
    stanfortyman Posts: 5,598, Reputation: 279
    Electrical & Lighting Expert
    		  
    #25

    Aug 8, 2008, 05:34 PM
    That's my sig line bud. Just like yours.

    We got a lot of that around here even though there is a sticky post asking not to.
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