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Thread: Indoor growroom electrical hookups

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    swords's Avatar
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    I want to make plans to get outta this condo and into a house with an unfinished basement where I can build a large solid wall indoor greenhouse/grow chamber that I can walk in.
    The highland chamber would be 10 x 20 with two 1000w Metal Halides, 5000-10000 btu air conditioner, several circulation fans, two humidifiers and a humidistat. Probably about 2500-3500 watts total.
    The lowland chamber will be the same lighting and humidity minus the air conditioner and fans.
    Will I be able to simply plug all this in or will I need to have some electricians hook up something special to allow the house to handle two grow rooms sucking up aproximately 5000W?

    I suppose a visit by the DEA would probably be customary as well! [img]http://www.**********.com/iB_html/non-cgi/emoticons/wink.gif[/img]

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    [img]http://www.**********.com/iB_html/non-cgi/emoticons/wow.gif[/img] wow that doesnt seem like it wouldnt be to much
    lol jk [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img]
    I love nepenthes

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    Tony Paroubek's Avatar
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    Basically your wanting to know how many amps everything is pulling. So you need to add up the total for all the items on the circuit and make sure it doesn't exceed the circuit breaker and wire (the wire should be matched to the breaker but still worth checking.)

    Most likely the airconditioner will need to be on it's own circuit. This will be easy to tell since it should have the amp rating on it somewhere.

    As for lighting and other stuff that doesn't have an amp rating..
    watts/voltage = amps

    so a 1000 watt mh lamp will pull
    1000/120 = 8.33 amps

    I suspect the problem you will have is that you will only have a single existing circuit which may be wired just for the basement or might also include a portion of the house. Most household circuits are 20amp. So to answer your question.. You will need more circuits put in most likely.

    For the highland room your probably looking at a 20amp and a 30amp so you have a little breathing room. The lowland you would be comfortable with a 30 since your not running an AC unit.
    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

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    i dont understand a thing you said
    [img]http://www.**********.com/iB_html/non-cgi/emoticons/tounge.gif[/img]
    I love nepenthes

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    swords's Avatar
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    Thanks Tony! I will have to include an electrician in my home buying plans! Perhaps have a house with two basement grow rooms built in...

    I've already blown my circuts at this condo a few times! I've had to stagger the timers so all the terrariums and fishtanks can run in one 24 hour period without the power going out in the apt.! [img]http://www.**********.com/iB_html/non-cgi/emoticons/biggrin.gif[/img]

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    Tony Paroubek's Avatar
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    The good news, if it is an unfinished basement then just be sure the circuit breaker box is easilly accessible and has room for more breakers. As well as having a good supply from the power line ie 200amps. It is very easy to add a circuit when access is open to the breaker box and the final point for the outlets. So even if you did need an electrician to run some circuits it shouldn't be overly expensive.

    Keep in mind that any outlets inside your grow room should be ground fault outlets or wired to a ground fault breaker.

    Tony
    Is that a Nepenthes in your pocket or you just happy to see me?

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    swords's Avatar
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    The rooms will be the same setup as my terrarium size chambers except built with GH polycabonate walls (cheaper and sturdier than that fiberglass shower wall) and double layer pond liner for the flooring.
    Inside there will only be the thermostat, humidistat, fans and humidifiers and the AC output (on the highland one). The power plugs for these (and the lights) will all be plugged in outside the rooms where it'll be dry. The lamps themselves will be above the rooms shining through a sheet of glass on the lid/ceiling (with another fan blowing over the lamp to keep the temps down-for the highlanders).

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    hey swords,

    I run a 1000 watt mh, a large AC and a couple of humidifiers and fans in my basement. the AC only runs at night when the light is off so it isn't an issue as far as current pull (make sure you don't buy the nice electronic ones, they won't work on an autotimer). The simplest thing to do is plug each metal halide light into a different socket running off a different circuit breaker and you will be fine. With an 80% efficient magnetic transformer the 1000W lights only pull about 10 amps, not too bad. If your greenhouse is about in the center of the basement you will find that the electrical outlets on either side are most likely on different circuit breakers making life easy for you. I do find it necessary to leave a basement window open.

    Believe it or not, a nice vacuum cleaner from walmart pulls more current than a 1000W halide so don't be too worried.

    joe
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