1-240v breaker into 120v and 240v help

Discussion in 'Grow Room Design/Setup' started by Gamereaper, Mar 28, 2012.

  1. #1 Gamereaper, Mar 28, 2012
    Last edited by a moderator: Mar 28, 2012
    Hey all i need some help here. I want to know if this works fine before I do it. Yes I know its not code...well I dont even know what code is... I will have 3 ballasts going atm so its not so maxed out.

    Attached Files:

  2. if im reading it right, it looks like it all checks out
  3. #3 Gamereaper, Mar 28, 2012
    Last edited by a moderator: Mar 28, 2012
    its not gunna make one lead draw less on the ballast you think? also what about using 120v plugs instead of the 240 singles? pretty sure my current room is like that lol, not from me though some one else. it's not like its a complicated thing....it's just a metal connector in the plug slit
  4. come on lol any more input??
  5. Open up the electrical code and find out what your breaker is rated for.
  6. Code just says for 30 amp use 10 gauge but 12 gauge is ok. Im just wondering about the "tap" in to one of the 240v circuits leads to make a 120v plug. But I figure it will be ok because electricity draws and it'll never be over 30 amps on either 120v lead right?
  7. If you are wiring this in series, the current (amperage) will stay the same throughout the circuit.
  8. Idk how much help I can be, I've only been in the electrical app for 2 months.

  9. perf thats what i thought just making sure. i tested them today and plugged some stuff in, works good so far. the 120 plug had the neutral connected to the other lead spot lol so it was 240 and i burnt a cfl out thank god a clf. ya this is my first wiring job ever of its kind I know how to work of radios and basic electrician stuff but that was 3 years ago now.
  10. Yea, in series the current stays the same, and in parallel the voltage stays the same.

    Glad I could help!
  11. Electricity is pretty crazy stuff be careful. Pick your self up a multimeter if you dont have one. The multimeter can be used for so many different things its invaluable and not expensive for a basic one.

    I was curious though I didnt see a ground going to the 120 volt outlets?
  12. #12 Marsdude, Apr 22, 2012
    Last edited by a moderator: Apr 22, 2012

    Your diagram shows that you will potentially be pulling 29.2 amps through your black wire attached to one 30 amp breaker - that is WAY too much for a 30 amp breaker and if you used 12 gauge wire you would have a fire.

    You need to run a sub-panel off of your breaker. Then you could run a double pole 20 amp breaker for your ballasts and a separate 20 amp breaker for your fan and air conditioner.

    You could replace the double pole 30 amp breaker with two 30 amp slimline breakers (if they are available for your brand of breakers) and one 20 amp regular breaker. That would give you two complete circuits.

  13. It's wise to separate your AC from your lights, and everything else. I suggest a minimum of 3 circuits, and never load them more than 75% of what they're rated.

    When your AC fires up (every time) it will spike in power use, and could pop the breaker, if you over load it.
  14. #14 Gamereaper, Apr 29, 2012
    Last edited by a moderator: Apr 29, 2012
    WellI have this setup running already but with 3 lights and 2 more fans. Its right at 90+ percent this is a one time grow, didnt have money to buy alot of stuff this time had to go cheap. but it does work with this setup and everything. Ya the a/c could break it probably if I had 4 lights.

    slim line? sweet I wish I knew of them. i will do this next grow at new location.
  15. This is a dangerous set up according to your diagram. If you look at the diagram you have the potential to pull more than 80% of the rated amperage on your black wire. Things like that make me nervous because it can cause a fire.

    Is there anyway you could get a double slimline breaker to replace the left breaker in your diagram and run your 220 off of that. Also, do you have space in your service panel? If so you could add a regular breaker.

    A double pole slimline breaker shouldn't be over $20.

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