I’m “asking for a friend” who plans to grow in an out building. What are the required amps/breakers for say three rooms? Tents, two flower and one veg. Let’s say one 600 watt LED for each room, an a/c, dehumidifier, humidifier, heater exhaust and circulating fans. 112v or 240v? His uncle is an electrician but doesn’t know the first thing about required growing equipment. He may want to add more lights later on.
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The amount of power and breakers you can use will depend on the amperage of your main fuse box. A proper grow room should have dedicated breakers for each room that feed a fused power board that has a proper timer and all the plugs you’ll need for each grow room. The electrician uncle should know the number of breakers and amperage needed for each room. The type of timer you buy is important. You’ll need a timer that can handle more than 15 or 20 amps to run your lighting on 240v. If your lighting supports 240v. What you buy matters to how you can wire the grow. Make sure if you want your lights on 240v to get a 40 amp mechanical hot water heater timer. With 240v lighting, you’ll need a timer with 240v outlets. You’ll also want 120v outlets for any 120v fans, pumps, etc. off/or on the timer. Someone who know’s what they’re doing can wire a grow room power board any way you want.
thanks jmystro never heard that about hot water heater timer.all the lights have the option of using 120 or 240.i’ve seen a few youtube videos about electrical setups for grow rooms but they were all for multiple 1000 watt hid not enough info about small led grow rooms maybe that would be a good topic for dude grows.Thanks for your help i always appreciate the knowledge you share on the show
You will need to know the wattage of your equipment lights, heaters , a/c units etc. circuits should only be loaded to 80% so you need to keep that in mind when sizing wire and breakers. I advise to go a little extra because people always add things they forgot and then wonder why they are tripping breakers. Running 240v let’s you use smaller wire and breakers due to lower amperage.
Electrician here I have wire multiple large legal grows and dispensaries as well as home grows
The first thing I would begin to figure is actual electrical needs based on design and load. If you can run your lights at 240 you can cut your amp load nearly in half but takes up more spaces in your panel. You don’t need a higher amp timer though. You could run both 600 watt veg lights on 240 and be around 5-5.5 amps. Your main breaker panel size will be dependent on the max load pulled at given time in that room. There are alot of variables in play like is the outbuilding close to there residence where the could feed it from main panel in house to sub panel in building? If you like more help I can be reached at bikinibottomfarm@yahoo.com I’d be more than happy to help u plan and design it
Thanks myco will be getting in touch with you hopefully soon
Great advice from the crew.
Just to give you an idea…
3x 600w leds is about the most you can safely run on one 20 amp circuit with 110v
That’s just for lights tho, you’d want another circuit for fans and equipment and I’d recommend also adding a dedicated 220v circuit for an air conditioner.
In my flower room I have a single 20amp circuit that’s just for lights with a timer hardwired in. That allows me to safely run about 1800w of lighting all off the same mechanical timer.
I also have a seperate circuit for fans and other equipment, as well as a dedicated 220v circuit for my ac.
So if I were you, I would plan on one circuit for lighting, one circuit for fans and other equipment and a dedicated 220 circuit for an AC.
Thanks Soup,your help is much appreciated
the Crew really does step up when asked what a great community to be a part of