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Thread: 800 watt heater

  1. #1
    Regular Vistor
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    800 watt heater

    Hi all

    I got a new 800 watt heater will the energy bar be able to handle this size .
    Thank you

  2. #2
    Frequent Contributor zombie's Avatar
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    Barely, but check your wall voltage first at a low load time (11pm to 6am). If it's consistently above 126V I wouldn't do it.

    Is that your only heater for the tank? If it is, I would return it and get two 400W heaters regardless of the above results.

    You might be an engineer if...You have no life and can prove it mathematically.

  3. #3
    Regular Vistor
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    No i have a 300 watt heater in main tank and a small heater in sump.would i be able to out the 300 watt one on the apx
    Thanks zombie!!

  4. #4
    Frequent Contributor zombie's Avatar
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    You can definately run a 300W on the apex.

    Check out this calculator to see what you really need, because it takes a huuuuuge tank to need an 800W.

    https://www.hamzasreef.com/Contents/...llerSizing.php

    Ideally you want two heaters the next standard size above the "after that" watts using ambient temp of what you set your thermostat in winter for.

    You might be an engineer if...You have no life and can prove it mathematically.

  5. #5
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    Cant the 2 mechanical relay handle up to 10 amp? And a 800w heater is around d 7amp normaly.

  6. #6
    Frequent Contributor zombie's Avatar
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    Quote Originally Posted by Teufel View Post
    Cant the 2 mechanical relay handle up to 10 amp? And a 800w heater is around d 7amp normaly.
    2016 Apex don't have 10A outlets. They are all 7A. Some heaters are rated 800W at 120V, which could pull as high as 7A, but some are rated 800W at 110V, which can pull as much as 8.3A which would overload the EB832 outlet.

    Even if you measured the resistance to be greater than 18 ohm, that size heater is never a good idea anyway unless you have a ginormous tank. You're much better off with multiple smaller heaters than 1 or 2 large ones in a tank that size.

    You might be an engineer if...You have no life and can prove it mathematically.

  7. #7
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    Thanks for all the info i went with two smaller heaters

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