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E47 Current Draw-how to test?

Discussion in 'Meyer / Diamond Products Discussion' started by eriklane, Feb 3, 2011.

  1. eriklane

    eriklane Member
    Messages: 75

    Can I test the current draw with the motor off? How do I test it in either case whether on or off?
     
  2. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    the best way is with an inductive pickup voltmeter. a clamp goes on the power wire to the motor and reads draw.
     
  3. MoparPlowJockey

    MoparPlowJockey Member
    from Indiana
    Messages: 31

    This pump must draw a lot of amps. I have had my current plow on two trucks, 87 GMC with a 120amp altenator and an 01 Dodge with 140amp and it dims the lights badly. I have tried grounding to two points and a larger battery to no avail.
     
  4. Bashby

    Bashby Senior Member
    Messages: 228

    Correct except it would be an ampmeter, not voltmeter and it has to be for DC
     
  5. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    are you grounding to the battery?
     
  6. MoparPlowJockey

    MoparPlowJockey Member
    from Indiana
    Messages: 31

    One point to battery the other to the engine block
     
  7. eriklane

    eriklane Member
    Messages: 75

    E47 pump amperage draw

    So, a regular handheld voltmeter with DC V and DC MA wont work? Kinda stupid here-just dont know electrical stuff.

    And then we'd just test the hot side? Can you fully explain more? My e47 is drawing too much (lights dim some), but seems to work fine...
     
  8. Bashby

    Bashby Senior Member
    Messages: 228

    A regular multimeter that measures mA wont do it, you need to be able to measure 150a or more. Some dimming of the lights is considered normal, if your pump + and - are hooked directly to the battery and all connections are clean.