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Thread: mastertemp electrical needs

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    mastertemp electrical needs

    Hi,

    I was wondering if anyone knows what the amp draw it would be for a mastertemp 250BTU.

    I have a 120v 15amp circuit with a pump on it and I was wondering if there would be room for the heater on the same circuit.

    Thanks,
    CC

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    TFP Guide

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    Re: mastertemp electrical needs

    I looked up the manual and it does not have a power requirement in it. I would guess about 2-3 amps as the only thing really drawing any power is the blower. Your pump motor should have the amps load listed on it
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    n240sxguy's Avatar
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    Re: mastertemp electrical needs

    I wish I could help, but the manual for that heater doesn't provide enough information relating to the actual current draw of the heater. All it says is to have it on a 15 amp breaker with a minimum of 14awg wire. The blower and ignitor work off line voltage, and the controls are stepped down to 24vac. Depending on the amp draw of the pump you have, you may be able to put it on the same circuit. I'm not sure if that's standard practice or not. Maybe someone else will know. I would venture a guess that unless it is a fairly small pump, you'll have to have a separate circuit for the heater. My 1.5 hp pump is rated for 9.6 amps at 240v, so around 18-19 amps on 120v. A 3/4 hp pump may leave enough room to run the heater, and a 1hp pump probably doesn't.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: mastertemp electrical needs

    Thanks for the responses, I have an old pump that draws 13.8 amps but I am looking at a new pump. Superflo has 8.8 amps and the whisperflo has 10.8 amps so I think that either of them will work with the heater.

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    n240sxguy's Avatar
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    Re: mastertemp electrical needs

    Sounds like it may work. The current pump is at the max for what you would want on that circuit. The new pumps should give you enough room. As danpik said, maybe 2-3 amps for the blower, and another couple for the ignitor for a few seconds when it starts up.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: mastertemp electrical needs

    You are good with what you have. In fact most units are hooked into the pump timer so they can't try to fire unless the pump is running. So I would suggest to hook the heater power into the timer and you are good to go.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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