120V vs 240V Setup

Discussion in 'Grow Room Design/Setup' started by GrowPako, Sep 11, 2009.

  1. #1 GrowPako, Sep 11, 2009
    I am a newbie starting from scratch.

    I am checking my math/assumptions.

    I live in an older home with only a 60amp main. I figure I have about 30amps available for my rooms. Can I get twice the amount of lights in a room if I use 240V vs 120V?

    eg. 4 lights X 600 watts each / 240V = 10 Amps VS. 4 lights X 600 watts each / 120V = 20 Amps.

    So if I go with 240V I could use 12 lights for the 30 Amps versus only 6 lights for 120V? :confused:

    Thanks for any help. ;)
     
  2. #2 5starfarmer, Sep 11, 2009
    Yes, running 240 allows more amps per leg. However, you need to make sure you're running the proper gauge wire to handle 20amps. Most in home wiring is only up to 15amp. You will probably have to rewire.
     
  3. #3 britishcolumbia, Sep 12, 2009
    Last edited by a moderator: Sep 12, 2009
    yes but you have to up size your wire 10 gauge will do it
     
  4. #4 GrowPako, Sep 12, 2009
    Thanks for the responses, but I am still a little unclear. 5starfarmer you say I can have "more amps per leg". Does this mean I can have more lights per amp?

    Also, thanks for the info on larger wire gauge this would probably have been my next question.

    Thanks Again. :D
     
  5. #5 5starfarmer, Sep 12, 2009
    more amps per leg, meaning a 20amp at 120 will get you a certain amount of lights vs the same 20 amps wired at 240v.
     

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