DiY LEDs - How to Power Them

I'll get that info when I get home on the temps. It's an indica strain. I want to say it'll get up to 80, and down to 73 or something. Night time is hotter though. The lights come on at night to save on power bill.

I want to move on to DWC for my next grow as well. Faster veg, faster end harvest. Easier to maintain from what I've seen.

http://www.ledsmagazine.com/ugc/2016/07/04/inventronics-launches-family-of-600w-programmable-led-drivers-designed-to-reduce-cost-minimize-inven.html


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Forrestfirebuds said:

Yeah go with 3-3590 and put it on a meanwell hlg-185h-36b drivers. That way you can control the efficiency and the intensity of those cobs using a potentiometer. The lower the current the more efficient but there is that happy medium tho. You should be shooting for par around 1000 to 1200 from what i have read. And its not the more cobs the more efficient either. It basically comes down to what driver you use and how much current you are using (how many milli amps you are using) that determines the efficiency

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Quoting your earlier post here.

The HLG-185h-36b:

What do the 3 series of "codes" specify on this driver? HLG, 185h, and 36b?

Found some conflicting stuff online so I figured I'd ask.

kaivorth said:

Quoting your earlier post here.

The HLG-185h-36b:

What do the 3 series of "codes" specify on this driver? HLG, 185h, and 36b?

Found some conflicting stuff online so I figured I'd ask.

Click to expand...

Hlg is the model of driver. 185h is the size of the driver or how many volts i believe. And the 36 means it pushes 36 volt cob lights instead of the 72 volts. And the b means that its dimmable and can adjust the milli amps(amount of current) pushed though the cob lights. with that driver you can adjust your current from zero to almost 2100ma since only 3 cobs will be running on it. Thats not exact number since i havent done the math on it. I think that driver pushes about 5.2 amps total so divide that 5.2 by the number of cobs and that will be the max current that driver can push those cobs

Look up growmou5 on youtube and he has a tutorials that will explain it way better than i can.

Forrestfirebuds said:

Hlg is the model of driver. 185h is the size of the driver or how many volts i believe. And the 36 means it pushes 36 volt cob lights instead of the 72 volts. And the b means that its dimmable and can adjust the milli amps(amount of current) pushed though the cob lights. with that driver you can adjust your current from zero to almost 2100ma since only 3 cobs will be running on it. Thats not exact number since i havent done the math on it. I think that driver pushes about 5.2 amps total so divide that 5.2 by the number of cobs and that will be the max current that driver can push those cobs

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Snap! That's exactly what I suspected. Such a big help.

The HLG-185h-36b:

3x Running at 1600ma = 4800ma (Under the 5200ma limit?) About 92% loaded?
Ironically, 92% loaded is about 92% efficient too?

I looked up his video and his is the one that either made a mistake or confused me. I understand everything but the model # of the driver he was representing and explained or something.

kaivorth said:

Snap! That's exactly what I suspected. Such a big help.

The HLG-185h-36b:

3x Running at 1600ma = 4800ma (Under the 5200ma limit?) About 92% loaded?
Ironically, 92% loaded is about 92% efficient too?

I looked up his video and his is the one that either made a mistake or confused me. I understand everything but the model # of the driver he was representing and explained or something.

Click to expand...

Sweet. Glad to have helped. I have just learned all this stuff too within the last 6 months. Its interesting and i couldnt have done it without all these guys that ive been learning from so hats off to them and spread the knowledge.

This looks like a nice little build, I may have a go but with a better cob.

So i think i just fucked myself by doing math wrong. I was planning on running 72 cree 3070 cobs with 18 meanwell hlg-185h-36b drivers. Thats approximately 3600 watts right. But my main circuit breaker box is only 100 amps. For some reason i was multiplying 1.4 amps with the 18 drivers and getting 25.2 amps. But thats wrong. Each driver is pushing 5.2 amps max. 5.2 times 18 drivers is like 93 amps right? Then theres the air conditioning and daily light, fidge, and tv usage. I have to upgrade my fuse box huh?

Yes you will have to upgrade the sub panel service. It will be more than just a bigger breaker. You will need a run of larger copper to it from The main panel also.

SomeGuy said:

Yes you will have to upgrade the sub panel service. It will be more than just a bigger breaker. You will need a run of larger copper to it from The main panel also.

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I think i messed up again on understanding stuff. Do i was looking at the output side of the driver which is 5.2 amps max. On the input side of the driver its 2.1 amps. So i calculate the input amps instead of the output side of the driver right?

I already had 8 gauge wire running at 220volt on a 40 amp circuit breaker so.....since im breaking the 220volt down into 110 volt is that essentially giving me 2- 40 amp 110 volt circuits? That 110 on each bus inside the subpanel, right?

Doesn't really work like that. The two buses are the hot legs. You are right. The most you will be able to run on each leg is two 20amp 115v circuits (four total if two per leg) if running them all together. Make sure the load is balanced between the hot legs.

The 8g is likely inadequate for any upgrading of that service. Check w local bldg codes to make sure but I'm fairly certain you will want.to put at least a 60amp sub and if it were me with that much wattage I would just put a 100amp in. Both will probably require larger copper

That's my 2cents

SomeGuy said:

Doesn't really work like that. The two buses are the hot legs. You are right. The most you will be able to run on each leg is two 20amp 115v circuits (four total if two per leg) if running them all together. Make sure the load is balanced between the hot legs.

The 8g is likely inadequate for any upgrading of that service. Check w local bldg codes to make sure but I'm fairly certain you will want.to put at least a 60amp sub and if it were me with that much wattage I would just put a 100amp in. Both will probably require larger copper

That's my 2cents

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So if i could run 2-20 amp circuit breakers on each bus(4 in total) i would be okay if i installed 2-15 amp circuit breakers on each bus and then i could put 5- drivers on each 15 amp circuit breaker and be safe since 5x2.1 is 10.5 amps right?

Each driver pulls five plus amps right? Simple addition. If using 15amp I would only put two drivers on each circuit. 3 if using 20amp. That leaves headroom on the circuit.

But then you need to consider all of your fans and ac. It's a huge chunk. My box fans alone use 100w each and I have six. The inline fans are usually around 200w each.

It adds up fast . Make a list of all loads and account for them in a wiring diagram it will help when designing the electrical installation.


Keep in mind as growers w use all the devices at once so the service needs to be large enough to support ALL of it running at the same time.

SomeGuy said:

Each driver pulls five plus amps right? Simple addition. If using 15amp I would only put two drivers on each circuit. 3 if using 20amp. That leaves headroom on the circuit.

But then you need to consider all of your fans and ac. It's a huge chunk. My box fans alone use 100w each and I have six. The inline fans are usually around 200w each.

It adds up fast . Make a list of all loads and account for them in a wiring diagram it will help when designing the electrical installation.


Keep in mind as growers w use all the devices at once so the service needs to be large enough to support ALL of it running at the same time.

Click to expand...

Well im a little confused on the driver tho. On the input side it says 2.1 amps and on the output side it says 5.1 amps. I know these drivers change the current from a/c to d/c. So do i calculate the input which is at 2.1 or the output side which is 5.2? Im thinking its the input side that i have to calculate right? Plus im running my air conditioning on a separate 15 amp circuit from the main box and i have 4 wall mount fans that only run about 0.5 amps each. Totally enclosed room with no inline fans. Basically 18 drivers at 2.1 amps divided with 4 wall mount fans spread evenly acroos 4-15 amp circuits. Air conditioner is on 5th 15 amps circuit from the main box

Post a link to the drivers and I'll tell you. Usually input power is what your paying attention to. (As long as input is ac). The output current will be DC to the cobs.

Heres the driver

Each one is using 2.1amps AC input. So that's what you will calculate from. On a 15amp circuit I would think anywhere from 5-6 drivers on it are safe.

The output is DC at 36v 5.1amp

SomeGuy said:

Each one is using 2.1amps AC input. So that's what you will calculate from. On a 15amp circuit I would think anywhere from 5-6 drivers on it are safe.

The output is DC at 36v 5.1amp

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Awesome!!! Such a big sense of relief and big difference on amps too. Thanks for your help. I appreciate it big time.