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Mouser has a "place holder" HLG-240H listing. Maybe Mean Well is waiting for the full slate of approvals.

A new data sheet is out, as well as test report pdf's for the individual models. File Name:HLG-240H-C-SPEC 2015-10-02 http://www.meanwell.com/mw_search/HLG-240H-C/HLG-240H-C-spec.pdf

[I should have mentioned the plants in my photo were grown with all dimming pots at 12 o'clock.] I don't have time to document my experience with Lumigrow thermal mgt. In the past, I have said (elsewhere) that Lumigrow is one of the few brands I can imagine being installed in a commercial...

I'll vote for a faulty driver based on the 45VAC Killawatt reading--was that confirmed?

Isn't the 10A fuse soldered? It looks like someone was already in there.

Right about the DMM, that set of terminals has an internal fuse rated at 10 amps. I was going to suggest cardboard for temporary insulation but it looks like you have it under control.

An interesting note under "Input", added since the preliminary data release: "MAX. No. of PSUs on 16A CIRCUIT BREAKER 2 units (circuit breaker of type B) / 3 units (circuit breaker of type C) at 230VAC" (Inrush current of 75A @ 230VAC)

"Sorry, this link is not authorized by Mean Well." File Name:HLG-240H-C-SPEC 2015-07-22

I think a pot or resistor across the dimming wires is a good idea, better than leaving them open. Looking at the specs, 100K ohms gives 100% while the open condition results in 102 to 108% of rated current. 10K would give 10% current.

Wow, what a flashback, Radio Shack . . . I don't know anymore, about getting DIY parts there.

The Killawatt meter shows 45Volts?

[Looking back at the first page, I see "mean well hlg-185h-c1050b, running 5 cxa3070"] Sounds like you have a good plan of attack, Al.

The constant current region begins at 95V. So your COBs' Vf needs to add up to between 95 and 190V. (Or add resistance, but that is sounding a little too advanced right now.)

https://www.google.com/search?sourceid=chrome-psyapi2&ion=1&espv=2&ie=UTF-8&q=digital multimeter video tutorial&oq=digital multimeter video&aqs=chrome.1.69i57j0l3.17812j0j7 "digital multimeter video tutorial"

I would stay with what Cree says on the second page here: http://www.cree.com/~/media/Files/Cree/LED%20Components%20and%20Modules/XLamp/XLamp%20Application%20Notes/CXA_design_guide.pdf "Material should be cleaned from a CX family LED by gently blowing the material off the LED with clean dry air...

I thought the Hydroton clay quarry and kiln closed in Germany? It works well in my hempy buckets, glad I bought a big bag a few years ago.

There are two divisions of Kingbrite. You might ask Carrie Peng: http://kingbriteopto.en.alibaba.com/productgrouplist-801276059/Lens_for_Cree_Led.html http://kingbriteopto.en.alibaba.com/productgrouplist-801228986/LED_glass_lens.html

About "stepping", it only matters if you have an art gallery or something where you want the visual quality of every light to be identical. Five-step is worse than three-step but cannabis doesn't care...

Red crimp connectors are designed for 22 to 18 AWG wire. (28 gauge is too thin)

Have you looked at verical.com for COBs? It is Arrow's surplus site and most COBs are sold in 20 or 100 unit quantities. Very good service. I don't see an easy way of attaching a row of cooliance heatsinks to an aluminum framework?