about power cords (not chords)?

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by hawkeyeinexile, Mar 29, 2005.


  1. hawkeyeinexile

    hawkeyeinexile Silver Supporting Member

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    i've read somewhere that AC power cords should always be untied when in use. but i'm putting together a 4-space rack of stuff (one power source, one TC G Major, one Hafler preamp) and it'd be better to keep them folded and wrapped all the time.

    opinions? info?

    thanks in advance,
    :cool:
     
  2. John Phillips

    John Phillips Member

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    At the sort of power draw of those units, don't worry about it.

    The danger actually comes when they're coiled (not folded) and under high power draw - the coil acts as an inductor and can generate a lot of heat.

    I once saw a band's wind-up extension cord literally melt when they left about 3/4 of it wound up in the casing and ran the whole backline and PA from it (probably around 10 amps @240V).

    Preamps and effects units draw in the milliamp range, no need to worry at all.

    In fact, purposely coiling the cables up very neatly may help reduce line noise.
     
  3. gregc

    gregc Member

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    Just don't wrap them TOGETHER with the signal \tuff... if you want to keep noise to a minimum.
    gregc
     
  4. hawkeyeinexile

    hawkeyeinexile Silver Supporting Member

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    thanks, fellas. just what i needed to hear.

    :cool:
     
  5. aeolian

    aeolian Member

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    Also, a coil acts as an antenna, in this case broadcasting the 60Hz AC (although the twisted conductors in most power cables help minimize this).

    For the same reason, neatly coiling the signal cords should be avoided.
     
  6. hawkeyeinexile

    hawkeyeinexile Silver Supporting Member

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    thanks for the tip, Steve. for this application i'm trimming up some George L's i've got, to size.

    :cool:
     

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