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Thread: 20amp Question

  1. #1
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    Default 20amp Question

    I am not sure for the correct Nomenclature.


    I am a renter but I have 20 amp single phase machines. Every time I move I need to get a dedicated 20 amp circuit installed for the machines cost $600 plus.


    Is their some kind of transformer that can like be plugged into a standard 10 amp socket. That then can ramp up the to 20 amp then the machine gets plugged into the transformer.


    Maybe it's stupid question but it maybe it be possible a cheaper solution.

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  3. #2
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    Quote Originally Posted by thumbsucker View Post
    I am not sure for the correct Nomenclature.


    I am a renter but I have 20 amp single phase machines. Every time I move I need to get a dedicated 20 amp circuit installed for the machines cost $600 plus.


    Is their some kind of transformer that can like be plugged into a standard 10 amp socket. That then can ramp up the to 20 amp then the machine gets plugged into the transformer.


    Maybe it's stupid question but it maybe it be possible a cheaper solution.
    Nope.

    Machines are rated in terms of current but what they are really rated for is power (Volts x Current) - there is no cheating this otherwise you would have a perpetual motion machine.

    You could use a transformer to drop the Volts which would increase the Current but that wouldn't help.

    Let's say your machines need 240V @20A or 4800 Watts.

    For example you could use a transformer on a 10A 240 V GPO to transform 240V/10A (2400 Watts) to 120V/20 A, but you would still only have 2400 Watts and remember your machine needs 4800 W.

    In practice very few machines use their fully rated power all the time but if you need to operate at full power even occasionally then you don't want to be stuck not being able to do this.

    You could just get some smaller machines - have you analysed in detail what proportion of your work actually requires a 20A machine?
    A considerable amount of work can be done with 2HP machines - 3P , 3HP machines plus VFD can run on a 10A GPO is another alternative.

  4. #3
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    Default

    Is your stove hard wired or plug in? Stove circuits used to be rated at 27amps. Not much use though if your machines are a long way from the kitchen...

    Just a thought.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  5. #4
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    Okay thanks for the answer I will just get circuits installed and move less.

  6. #5
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    Quote Originally Posted by Vann View Post
    Is your stove hard wired or plug in? Stove circuits used to be rated at 27amps. Not much use though if your machines are a long way from the kitchen...

    Just a thought.

    Cheers, Vann.
    Our induction cooktop is on a 32A line.

  7. #6
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    Default

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