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Electrical Help-120 vs 240 volts for my math?


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New poster, long-time lurker. 671 amps! That seems like a lot. Can someone check my math? Amps=watts/volts. My total system with lights and ac units will be 

80,430 watts net. Do I divide this by 120 volts or 240 volts? If I divide by 120 volts I get 671 amps, if I divide by 240 volts I get 335amps. What's the typical volt service in Michigan? If it's 240 volts, are there 2 120 arm power sources? How does this translate to watts? 24,000watts or 48,000 watts in a typical 200amp breaker? Any advice is appreciated! ~Leaphie

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11 hours ago, Leaphie said:

New poster, long-time lurker. 671 amps! That seems like a lot. Can someone check my math? Amps=watts/volts. My total system with lights and ac units will be 

80,430 watts net. Do I divide this by 120 volts or 240 volts? If I divide by 120 volts I get 671 amps, if I divide by 240 volts I get 335amps. What's the typical volt service in Michigan? If it's 240 volts, are there 2 120 arm power sources? How does this translate to watts? 24,000watts or 48,000 watts in a typical 200amp breaker? Any advice is appreciated! ~Leaphie

So you are saying you want to run 80 1000 watt bulbs? If you need that much of a grow, which is actually crazy with the regular transformer on your electrical pole, you had better slim down to LED lights.

Let's start with what lights you are planning to use and how many. 

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Thanks for the reply. At max capacity I'm planning on 36 1000w HPS flowering lights, 12 600w metal halide veg lights, so: (36x1000w) + (12x600w)=43,200 watts.  4 inline fans at 300w each: 4x 300w=1200w.  18 55w room fans: 18x55w=990w. Total wattage so far: 45,390 watts. 2 10 ton 3 phase AC units: 70,080 watts

45,390w+70,080w=115,470 watts net

115,470 watts /240volts=481.125 amps?

It seems a little excessive! ~Leaphie

 

 

 

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6 hours ago, Leaphie said:

Thanks for the reply. At max capacity I'm planning on 36 1000w HPS flowering lights, 12 600w metal halide veg lights, so: (36x1000w) + (12x600w)=43,200 watts.  4 inline fans at 300w each: 4x 300w=1200w.  18 55w room fans: 18x55w=990w. Total wattage so far: 45,390 watts. 2 10 ton 3 phase AC units: 70,080 watts

45,390w+70,080w=115,470 watts net

115,470 watts /240volts=481.125 amps?

It seems a little excessive! ~Leaphie

 

 

 

I believe you will have to contact your power company and ask them to install a commercial transformer for your business.

Then expect the usual forms, fees and inspections that commercial businesses have to abide by. 

Make sure you are zoned commercial.

Or you could be less of a hog and run a reasonable amount of LED lights that don't need as much cooling and not worry about the extra attention. 

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