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Thread: Compact conductors

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    Compact conductors

    Correct me if I'm wrong. Most all of wire made these days is considered a compact conductor? Does it list it on the insulation? Ive never seen it. I was told 90% of wire is made to be a compact conductor.

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    Quote Originally Posted by olly View Post
    Correct me if I'm wrong. Most all of wire made these days is considered a compact conductor? Does it list it on the insulation? Ive never seen it. I was told 90% of wire is made to be a compact conductor.
    All of the aluminum wire I get is of the compact type.

    None of the copper wire I get is compact.

    You can tell compact conductors by the shape of the strands, if the individual strands are not round you have a compact conductor.


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    Who told you that?

    I thought most conductors were actually just regular stranded and compact conductors would have to be specifically ordered/asked for.

    I am pretty sure I have never used them. I have never ordered them nor have seen them speced on my jobs.
    "Electricity is really just organized lightning." George Carlin


    Derek

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    Quote Originally Posted by iwire View Post
    All of the aluminum wire I get is of the compact type.

    None of the copper wire I get is compact.

    You can tell compact conductors by the shape of the strands, if the individual strands are not round you have a compact conductor.

    Oops. Once again, I stand corrected. Thanks Bob, I had not known that.
    "Electricity is really just organized lightning." George Carlin


    Derek

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    Quote Originally Posted by iwire View Post
    All of the aluminum wire I get is of the compact type.

    None of the copper wire I get is compact.
    Same here out west.
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    Quote Originally Posted by olly View Post
    Correct me if I'm wrong. Most all of wire made these days is considered a compact conductor? Does it list it on the insulation? Ive never seen it. I was told 90% of wire is made to be a compact conductor.
    In my experience most general purpose wire (excluding service conductors and MV/HV) is neither compact nor even compressed.
    I think you will also be more likely to find compact construction in Al wire, since it is softer.
    Compact construction makes stranded wire more difficult to bend for the same metal cross section and stranding.

    I doubt that compact will be specified on the wire itself; you would have to look at the product specifications.

    That said, for service, transmission, and distribution lines compact stranding does seem to be popular. For overhead lines it reduces the wind resistance cross section for the same amount of metal and for cables and insulated wires it also reduces the voltage stress on the insulation surrounding the wire.

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    Quote Originally Posted by ActionDave View Post
    Same here out west.
    Do you have to ask for it or is it just standard?
    "Electricity is really just organized lightning." George Carlin


    Derek

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    IN an earlier post fmtjfw pointed out the following:


    UL White Book 2013 ZKST Thermoset-Insulated Wire and ZLGR Thermoplastic-Insulated Wire:
    ....
    Wire and cable employing compact-stranded copper conductors is so identified directly following the conductor size, wherever it appears (surface, tag, carton or reel), by ‘‘compact copper.’’ The abbreviations ‘‘CMPCT’’ and ‘‘CU’’ may be used for compact and copper, respectively.

    Tags, reels and cartons for product employing compact-stranded copper conductors have the marking: ‘‘Terminate with connectors identified for use with compact-stranded copper conductors.’’
    ....

    AL wires are also in the same sections.
    At my age, I'm accustomed to restaurants asking me to pay in advance, but now my bank has started sending me their calendar one month at a time.

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    Quote Originally Posted by GoldDigger View Post
    I think you will also be more likely to find compact construction in Al wire, since it is softer.
    My understanding is the entire point of making AL compact is so AL conductors of the same ampacity as copper conductors will fit in the same conduit.

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    Well, what do you know, I've been installing compact AL and never paid attention.

    I went to Southwire's site and as Bob said it is compact AL. AA-8000.

    Damn, I know I never figured compact wire for conduit sizing. Ooops.
    "Electricity is really just organized lightning." George Carlin


    Derek

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