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How to hook up ballast...

Discussion in 'Grow Room Design & Setup' started by smigula, Jan 14, 2013.


    smigula Well-Known Member

    Hey, so this is going to be my first grow so all of this is new to me. I bought this 250W MH ballast from a guy on craigslist (I got a really good deal on it), and I bought a new bulb for it, but I do not know how to hook it up, I have looked on the web and can not figure it out, can someone please help me or point me in the right direction? Here is a pic of the ballast:

    Attached Files:


    mr2shim Well-Known Member


    smigula Well-Known Member

    I do not have the money to buy a new ballast right now and I already started germinating my seeds, so if I cant get this light working I am going to grow outdoors (I live in Florida so sunlight is not an issue), I see the ballast has 3 wires, do those 3 wires hook up to the 3 wires from an exposed extension cord?
    209 Cali closet grower

    209 Cali closet grower Well-Known Member

    it shows you on the ballast?

    smigula Well-Known Member

    Hey it does show a wiring diagram on the ballast, however I am a little confused on how to wire it up. The ballast has 3 wires (red, black and white), it tells me:
    BLK -> 120V
    RED -> LAMP
    WHT -> COM

    Here is a picture of the ballast and the lamp socket that has a 3 prong connector, sorry for all of the confusion this is my first grow and I would like to get the ballast and bulb working as all 10 of my Bubblelicious seeds just sprouted and I put them into my propagator pro


    smoketheregs Member

    This may help, however I have no experience with this just found a video with this tutorial;


    mr2shim Well-Known Member

    That looks like a fire waiting to happen.

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