Qb arrived

Trickyticky said:

So what's the best ? The 36 v or the 48 v ?

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The one that matches the voltage of your boards.

Can you post a link to the boards you bought?

Haway man , ya not giving much away here ,
How can a find out bout me boards then ?

Trickyticky said:

Haway man , ya not giving much away here ,
How can a find out bout me boards then ?

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Ask the retailer for specs.

PJ Diaz said:

Can you post a link to the boards you bought?

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It was off eBay https://www.ebay.co.uk/itm/240w-Sam...-grow-light-Quantum-Board-2000w-/284053095868

Trickyticky said:

It was off eBay https://www.ebay.co.uk/itm/240w-Sam...-grow-light-Quantum-Board-2000w-/284053095868

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Well I guess we can assume the boards are 36v, since that's what they came with, just haven't see that before.

It's odd though, because they say this:
"Meanwell ELG-240-36A Driver.

AC-DC single output LED driver (CC+CV) with FC, output 48VDC at 5A, IP65. Dimming with 1-10Vdc 10v PWM resistance. Low to high adjustable through External dial."

That driver is a 36v driver, but they say it's 48v. Plus they pic of the driver you showed was a Meanwell ELG-240-36AB Driver, but they have Meanwell ELG-240-36A listed.

Another odd thing in that listing is the following statement:
"The LM301H supplied diodes running efficiency is 3.7% greater than the LM301B, making a dramatic cost from the wall reduction."

Not sure where they can up with that, since lm301b are virtually the same as lm301h, assuming you are comparing the same bins.

So is it a decent light and driver .? Better or worse than advertised ?

Hello again fellow growers .
Finally got some adjustments done in the shed grow , still got to Finnish off a little bit board work but can work round what I have at the min .
Question is .
Is 40% on the intensity ok for these seedlings ?
I know it will be trial and error but what do you chaps set your lights at ? These have been under a pl4 light and sprouted 2 days ago , I've just put them under the qb today after cutting and drilling steel for the spacers used to get more canopy coverage .
Also found a nice place to position dimmer switches .