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30 Gauge Wire & DC Motor?

Discussion in 'Electronic Basics' started by redbrickhat, Feb 1, 2006.

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  1. redbrickhat

    redbrickhat Guest

    I was wondering if I can use 30 gauge wire-wrapping wire to power a DC

    The motor is a "Gear Motor 2" from with the
    following specifications:

    "This motor offers 50 in-oz of torque and rotates at 38 rpm (just a bit
    slower than a servo). With a 5V power source it draws 600mA when
    stalled and 52ma when unloaded. It has a 7mm double-flat output shaft,
    built-in clutch, and convenient mounting screw holes."

    The webpage says that 30 gauge
    wire has "Maximum amps for chassis wiring" of 0.86 and "Maximum amps
    for power transmission" of 0.142, both values very conservative.

    Any feedback will be appreciated.

    Thank you.
  2. Lord Garth

    Lord Garth Guest

    I believe the rated current maximum for 30 gauge kynar insulated wire wrap
    is 500mA. I don't think you should use that wire near to or greater than
    its rating.

    Choose a multistrand wire instead.
  3. Rich Grise

    Rich Grise Guest

    Don't do it. That kind of wire isn't for that kind of application. Don't
    use solid wire for hookup to something like a motor. In fact, avoid it
    everywhere if at all possible except for wire-wrapping, protoboards, and
    bus wires, otherwise use stranded. And for a motor that could stall at 600
    mA, I'd use at least #28, preferably #26. What kind of application is it?
    is there a lot of vibration?

    Here Ya Go:

  4. Chris

    Chris Guest

    As you noted yourself, 30 gauge wire is rated for about .14A for "power
    transmission". Your stall current is more than 4 times that. Under
    stall conditions, the wire might not fuse, but it will certainly get
    real warm. No way to run an ant farm.

    Copper hasn't become that expensive. In the "real world", you would
    use a minimum of 22AWG stranded wire for this purpose.

    Splurge a little. The dominant consideration here is the physical
    strength and durability of the wire and the connection.

    Good luck
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