The lights are wired with (4) strips in series, powered by a Mean Well HLG-320H-C1400B.
The strange thing is that when I power the same 4 strips with a Mean Well HLG-320H-C1750B, they produce only about 60% of the ppfd compared to the HLG-320H-C1400B.
When I use a clamp meter to test the DC amperage being pulled by the circuits;
When metering the circuit as powered by the HLG-320H-C1400B, I see a current draw of 1.75 A. Now I know this might be confusing because that is the same as the rating of the HLG-320H-C1750B, but this is not a typo.
When metering he circuit as powered by the HLG-320H-C1750B, I see a current draw of 1.22 A.
Both measure at 184 VDC.
What the hell is going on here?
![Image](https://i.imgur.com/jcP8tzu.png)
![Image](https://i.imgur.com/QWgll4T.png)
I know that 4 strips in series should require 184 VDC. I was told on this forum that the HLG-320H-C1750B could handle that voltage while still supplying constant current, even though it is one volt over the constant current rating. Is that not correct?