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Buy a single driver separately from the boards and heatsink, could save about $80-100 over buying 4 kits, each with its own driver.

I have an 8.5 kW grid tie system. There is some DC/AC conversion losses, but it is not that significant. However, batteries are extremely expensive. The other big issue I see with running direct DC from the panels is that the power provided by the panels isn't enough on cloudy days or 4 hours...

I'd be interested in seeing independent testing results. Sponsored, not so much.

You have a range of options. One driver will light 3 cobs wired in series which is running them pretty hard. You might get away with running 4 cobs wired in series, it's close to the max voltage of the driver (152 volts). Another option is to run two parallel strings of 3 (or 4) cobs per...

Post this in the indoor growing LED sub forum, lots of super knowledgeable folks there.

Post this in the LED subforum, but generally, the advice I've seen is 50 watts per sq. ft. for HPS, and 25-50 watts per sq. ft. for LED. The range for LED is because LEDs have a wide range of performance characteristics based on the diodes used and how hard they are driven.

2. Yes 3. Wire size is based on how much current and length of run. 4. Yes 5. Yes. To have a remote dimming option, a "B" version Meanwell is recommended.

You can run the AC compressor in your garage, but you will need to move a lot of air into and out of the garage for it to work properly. It would be better to put the compressor outside where there is enough air for proper operation.

4000k has also been an option.

Electric heat in Canada. Wow. Yeah, you have great electricity rates. That is why your landlord hasn't changed out the electric heat that HE is paying for. And your grow probably generates enough heat to redue the amount of electric heat you use in the winter. If you post pics of the rating...

Why not?

Lol, so true.

How many boards will that shipment be? If people knew that, they could plan accordingly. I'd also be willing to put up a modest deposit if the issue is HLG does not have sufficient cashflow for a run sufficient to meet demand. But the issue might be that there isn't currently the...

I think @sunandsky is renting an apartment? Getting new circuits installed for an indoor gardening hobby doesn't really seem like a request the landlord would rush to do. However, you could probably run one of the air conditioners or the dehumidifier off the washing machine outlet if you used...

For @robincnn and @Stephenj37826 I sure hope that is the case, but at least 1000 boards would last 15 minutes, and those folks who planned to hit the site at 9:02 would get gear. @Stephenj37826 thank you for the offer to email, the gesture is appreciated. I already have a few and wont need...

I think it's a problem of expectations. If people knew that tonight HLG was only going to have 250 units or so for sale (including kits), then people would be able to temper their expectations

Looks the the 260 kits are the 288s, so series is an option.

Pay up or wait until next time ! lol.

@robincnn and @Stephenj37826, I sure hope the next run is at least 1,000 units.

Come on man, you had 3 MINUTES !!!!!!!! No time to goof off by posting on RIU. Quantum Boards are serious business.