400bird
Solar Wizard
OMG this is a mess
I think you don't quite understand how current from PV / amperage testing works.
Your current set up might be capable of putting out 45 amps but it isn't. (assuming you're using the clamp meter correctly)
There are multiple reasons why you might not getting full output from this solar set up.
To test for full possible amps from the array: disconnect PV wires from charge controller, short PV+ and PV- together, measure amperage.
There's no other proper way to get the possible/available PV amperage.
Can I guess what you are doing with the "multimeter testing" on the other array?
You are setting the meter to amps, leaving everything connected to the charge controller, putting the red lead on PV+ and black lead on PV- ?
If so, that's the short circuit test, you are shorting PV+ to PV- through the meter.
I guess you've been getting lucky, having not caused any damage yet, sounds like Hedges hasn't been so lucky.
I think you don't quite understand how current from PV / amperage testing works.
Your current set up might be capable of putting out 45 amps but it isn't. (assuming you're using the clamp meter correctly)
There are multiple reasons why you might not getting full output from this solar set up.
To test for full possible amps from the array: disconnect PV wires from charge controller, short PV+ and PV- together, measure amperage.
There's no other proper way to get the possible/available PV amperage.
Can I guess what you are doing with the "multimeter testing" on the other array?
You are setting the meter to amps, leaving everything connected to the charge controller, putting the red lead on PV+ and black lead on PV- ?
If so, that's the short circuit test, you are shorting PV+ to PV- through the meter.
I guess you've been getting lucky, having not caused any damage yet, sounds like Hedges hasn't been so lucky.
But don't do that while both PV+ and PV- are still connected to input of SCC (ask me how I know this.)