4 32 site xl undercurrent systems in a 20X40 room

Renfro

Well-Known Member
So i lost the building i was going to get because i slowplayed to much. Found new building. Only concern is that it has 3phase power. Im clueless as far as that goes. Like will i not be able to have any equipment that are 120v? Fans pumps ect?
Three phase power, what voltage?
 

1212ham

Well-Known Member
It should still have 120v and 240v single phase. It may also have a 277 volt lighting circuit. I'm thinking three phase would be more efficient for the big power loads like AC and chillers etc.
 

Renfro

Well-Known Member
If it's a 208 three phase you can get 117 from leg to neutral and 208 from leg to leg. Lighting could be run at 208 and small loads on 117.
 

Renfro

Well-Known Member
Properly sized ransformers can convert voltages as required. Just hire an electrician.

A 277 volt lighting feed is often a "crazy" leg transformer (480v) and usually is only rated for about 15% of the total service amperage.
 

1212ham

Well-Known Member
Many LED drivers have higher efficiency when powered with the higher AC input voltages, are HID the same?
 

bdt1981

Well-Known Member
Properly sized ransformers can convert voltages as required. Just hire an electrician.

A 277 volt lighting feed is often a "crazy" leg transformer (480v) and usually is only rated for about 15% of the total service amperage.
Yet the 100watt de lights are 2.7 amps on the 480v 3 phase. But what about the power cord will it be different when buying 480v lights? So my outlets will be different?
 

bdt1981

Well-Known Member
The building currently has a breaker box that is 125 amps so i have to have electric company come add an additional 400 amp box.
 

Sparky123

Well-Known Member
Hey I make sparks at work all the time. Difference is I’m not asking questions which make any experienced electrician do a face palm and wait for the news reports to come through
 

bdt1981

Well-Known Member
You honestly need to hire an electrician. Every question you asked is completely not even close to what you are looking for. You will either burn your place down or kill yourself. Espically at 277/480 v
I wasnt going to do anything myself electrically. Thank you Renfro for giving me the info i needed. The hardwiring of the 277-480v. Im trying to figure cost and without the ballast in my hand i didnt know how power is delivered. Didnt know if i was going to need 24 different outlets wired into the room. I know 480v outlets are expensive asf as well as the plugs. So spaarky my questions are exactly spot on for what i was looking for. I mean would an avg electrician know that a 277-480v growlight is going to be hardwired and not need any outlets? I was needing some info so i could ask electrician the right questions. But thx everyone
 

bdt1981

Well-Known Member
Ok! After much runnin around much changing up we have finally signed a 2yr lease on a building to start my medical cannabis grow operation. YAY!!! The flower/veg room is 24X37 so i am going with 3 ucdb32xl systems with 24 slimline de gavitas. To be safe im going to add 20 tons of air conditioning. Dont want to get to mid summer with 105degree temps outside to figure out my ac cant keep up. Everything has been well thought out and well planned. I have been plannin and studying up on the undercurrent system for the past 3yrs waiting for medi canna to pass in my state. Im not going to be one of them guys who (like 2 different people i know) have plants in veg for 5 months trying to get flower set up because they dont know how to plan well to avoid any hold ups. That is main reason im going to veg and flower in the same grow room. Ill have a different room for mothers and clones though.
Apx 2 weeks and ill be a licensed commercial medical marijuana grower. Cant FUCKING wait! I still have one huge decision to make with the air conditioning though and thats why i have come back to the mostly helpful people on rollitup that i have been a member of since my very first hydro setup back in 2012. Unfourtunatly there are a few unhelpful people here that think they know wtf when really they dont. Or they think they are better growers or smarter or whatever. To all you guys like that please hit the back tab and gtfo of this post. Cuz u blow dick tbh.
Ok now i have been looking at either getting 2 10 ton commercial downdraft ac units mounted on the roof, which if i decide to get a different building in the future is going to leave me with 2 big ass holes in the roof to deal with. Ugh. Im not going to just leave 15k worth of ac there its comin sith me. Other option is 4 5ton ideal air mega split units. I found them on sale online for under 3grand each without the line sets. Add at most 400 each for lines and we talkin 3100 each so 12400 total. Its recommended to have an hvac guy connect the lines. Not sure how hard they will hit me to do that but surely not the 14k in labor i was quoted to install the 2 10 ton units on the roof. The guy said labor will be as much as the equipment. That they take equipment price and double it to get their total. Like WTF! Really? Soooo my question is do you guys think 4 5ton ideal air mega splits will do the job that 2 10 ton commercial units would do? Appreciate the help and always THX in advance.
 

Apalchen

Well-Known Member
In a garden that size I would personally run the larger units. It really sounds like you could use a hand I’m ready just let me know where to go, lol. Not familiar with med laws there do you have a plant count limit? I love dwc and a lot of people kill it in dwc but a lot of people fuck up to. Do you have a good bit of experience with Dwc? Not at all trying to discourage you just curious on why chose dwc? I personally would run tables with rockwool in an op that size. With drippers there is virtually no waste in water and no Rez draining and throwing out old water. I know drain to waste sounds more wasteful but in practice it actually waste less water and nutes. I’ve seen jungle boys comment they don’t get much if any run off on their rockwool setups. If you have plant count limits then by all means rdwc is the way to.

Good luck on your endeavor, Not gonna lie I’m slightly jealous, just finishing up building my “bigger room” and it’s only 4K watts.
 

Apalchen

Well-Known Member
In a garden that size I would personally run the larger units. It really sounds like you could use a hand I’m ready just let me know where to go, lol. Not familiar with med laws there do you have a plant count limit? I love dwc and a lot of people kill it in dwc but a lot of people fuck up to. Do you have a good bit of experience with Dwc? Not at all trying to discourage you just curious on why chose dwc? I personally would run tables with rockwool in an op that size. With drippers there is virtually no waste in water and no Rez draining and throwing out old water. I know drain to waste sounds more wasteful but in practice it actually waste less water and nutes. I’ve seen jungle boys comment they don’t get much if any run off on their rockwool setups. If you have plant count limits then by all means rdwc is the way to.

Good luck on your endeavor, Not gonna lie I’m slightly jealous, just finishing up building my “bigger room” and it’s only 4K watts.
 

bdt1981

Well-Known Member
In a garden that size I would personally run the larger units. It really sounds like you could use a hand I’m ready just let me know where to go, lol. Not familiar with med laws there do you have a plant count limit? I love dwc and a lot of people kill it in dwc but a lot of people fuck up to. Do you have a good bit of experience with Dwc? Not at all trying to discourage you just curious on why chose dwc? I personally would run tables with rockwool in an op that size. With drippers there is virtually no waste in water and no Rez draining and throwing out old water. I know drain to waste sounds more wasteful but in practice it actually waste less water and nutes. I’ve seen jungle boys comment they don’t get much if any run off on their rockwool setups. If you have plant count limits then by all means rdwc is the way to.

Good luck on your endeavor, Not gonna lie I’m slightly jealous, just finishing up building my “bigger room” and it’s only 4K watts.
There is no plant count limit. More plants mean more labor. I plan on running it all single handed. I have no exp with dwc but with aero and ebb and flow. Im not worried i have studyed up plenty to run the uc system. It will be easy with the proper equipment. Im going with a growlink 7 pump smart doser on each system to be able to monitor it from smartphone. The reason im starting to lean toward the 5 ton mega splits is that i was quoted 14k on labor to install 2 10 ton commercial units that cost 14k together. Like really they wanna double the price for install that shouldnt take but 2 or 3 days tops.
 

nDanger

Well-Known Member
What RO water system are you planning on? 750 gallons to do a weekly water change will require some serious tankage!
 

bdt1981

Well-Known Member
What RO water system are you planning on? 750 gallons to do a weekly water change will require some serious tankage!
I was thinking i could get by with water change every 2 weeks minimum with a ro top off and grow link auto dosing system. But yea a hydro logic 1000 gpd with float valve and 3 250 gallon water totes piped together. Do u think the dosers wont allow that long on water change?
 

Apalchen

Well-Known Member
How long are you going to veg in the UC system. I think UC systems are great for people with plant count limits and medical patients. I just don’t see how it is less work at all and having to veg for so long in your flower room cuts your crops per year back. I’m not trying to be discouraging at all I follow 1 or 2 undercurrent commercial gardens on IG. If you got a 60 day stain and veg for 30 days that 90 days in your flower room. So that’s 4 crops a year vs 6 if you just flower in the flower room. I don’t see anyway that your yield would be so much higher on the undercurrent system thatvit could make up for two lost runs per year. Then again cost per crop goes up, electric cost per crop goes up, dumping the Rez every couple weeks waste water and nutrients.

Again not trying to discourage just making sure you thought of all this as opening a commercial grow your gonna have to compare all the cost and production. Margins are fairly thin so when you look at big commercial facilities look at what they are doing for ideas on how to save money and pump out the most per year.
 
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