Power supply question

Discussion in 'Grow Room Design/Setup' started by Cannibus Colin, Oct 19, 2006.

  1. Hey city, hope the day's gone well for everyone!!

    I have a question about my power supply.

    I have a heavy duty extention cord running from my socket to my 400 watt hps. I also wanted to plug a 40 watt flourescent tube light into the same extention cord.

    Is this ok?

    Should I run a seperate extention cord to run the flourescent lights?

    I also need to plug in my fan and 5 very small airpumps.

    Any suggestion will help!!
  2. it should be fine. you want to know how many amps the breaker is. to find out if your breaker can handle the load use the following formulas to figure what your using on any particular circuit.

    Watts = Volts * Amps

    Watts / Volts = Amps

    1200 watts / 120 volts = 10 amps
  3. Thanks GrowBot, ur the shit!!!

    (400watt hps and 40 watt tube light = 440 watts?)
    so I would have 440 watts / 120 volts = 3.67 amps?

    So I could plug my fans and pumps into the same socket in theory?

    I really appricite all the help guys
  4. yes but make room for startup surge, there is a higher power draw when u turn all ur shit on... do u know the gauge of ur extention cord?
  5. 13A 1625W Think it's OK?
  6. Should be ok. It is a good idea to run solid copper to a major appliance or get a heavier extention coard. Also smart to use a GFCI breaker or outlet.
  7. Hey Thanks evilbuttgroove!!

    I'm gonna get a heaver cord soon, thanks. GFCI breaker? is that the kind that we had to put into the bathroom? has the little black and red buttons on it?
    If so, i'm already good to go there!!
    thanks again guys.

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