Electrical question... Need help! :(

I just recently had my warehouse rooms insulated well enough to hold temps (t15/r30)(it's upstairs so it was like an attic and insulation was very poor)
I was wondering how many watts/circuit/etc/etc would I need to be able to run in my rooms? I'm not an expert with electricity, nor do I know how to calculate any of this, so I'd be very grateful if someone was able to give me a number for this to tell my landlord how many watts/circuits I need to be able to run through the rooms. (don't want to burn anything down )

I am planning on running:
8 1000w dimmable ballasts (hydrofarm) with hoods (planning on doing 600w for veg and 1000w for flower to save electricty) (4 in each of the rooms)
2 10" Max-fans (no in-fan as I'm planning to run a passive ventilation system with a 12" hole) (1 in each)
A carbon filter
Maybe a heater or two (not sure how many watts it will run if I do use them)

If you go 220 on the lights, you should be able to get by with a 60 amp main feeding a smaller sub panel with 20 amp breakers in it.(both 2 pole and single pole)
If you go 120 on the lights, I would bump it up to at least 70 amp main feeding a smaller sub panel with 20 amp breakers in it.

Keep the lights on seperate breakers from all other equipment so as to avoid heartbreak from a lost crop.

Peace and Great Grows

Asmallvoice

Crankyxr said:

I'd be very grateful if someone was able to give me a number for this to tell my landlord how many watts/circuits I need to be able to run through the rooms.

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I guess that the sentence is a bit confusing... Is he my partner? My landlord? or is he... me?????? hmm... Got me thinking a whole bunch sand.

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Sand4x105 said:

• /\ you said: "me a number for this to tell my landlord how many watts/circuits"
  
  The landlord is your twin brother, or your partner ?
  
  A 15 amp branch circuit can hold 1500 watts [80% of 15 x 120=1800 would be you max allowed on 15 amp...
  OHM's Law is useful here:
  Watts divided by Volts = amps
  or
  amps times volts = watts
  or
  watts divided by volts = amps needed
  
  Each 1000 watt ballast would need its own branch circuit, then put your fans [not much load] with any lighting circuit.. The heater I would think would need it's own dedicated circuit.
  
  A 20 amp breaker at a sub panel would be able to handle
  
  20 [amps] X 120 volts = 2400 or 80% of 2400 = 1920 watts on each circuit... to be National Electric Code [NEC] legal... never go over 80% of circuit max....
  
  I'd install 10 - 20 amp branch circuits in a 100 amp sub panel to do your job right....
  
  Good Luck!​
  
  

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Wait... So I need 10 to 20 amp branch circuits in a 100 amp sub panel?
Or do I need ten, 20 amp branch circuits in a 100 amp sub panel?

With the listed power you mentioned first, I would [safety first] run 10 branch 120 volt 20 amp circuits.
Using 12 AWG wire for a 20 amp breaker.... Is this a rewire, or using existing...

There's already an existing power outlet thingy for the regular room lighting fixtures, but that's really all of the info I needed to know. Thank you for the great help! +rep

Crankyxr said:

There's already an existing power outlet thingy for the regular room lighting fixtures, but that's really all of the info I needed to know. Thank you for the great help! +rep

Click to expand...

You're welcome