Hi. I want to connect some non-critical loads to a MultiPlus II, and I’ve seen that there are usually two ways to do this: connecting them to AC-in or to AC-out2. However, I’m not sure about the pros and cons of each option.
Based on your experience, which type of connection is the most appropriate?
Another question I have is how the MultiPlus II measures the consumption of the non-critical loads — is it necessary to install a second energy meter?
Thank you.
Hi
If your total loads (ac out 1&2) exceed the transfer switch capacity of the multiplus, connect non critical on ac in side
if not both options are ok
On ac out 2 the multiplus will measure the load, when grid fails, ac out 2 will switch off, but you can turn it on again if needed
on ac in load measuring from non critical will be a calculation, you need an energy meter if you want to measure it exactly, when configured correctly and there is enough PV/battery power these loads can also be powered by PV/battery as long as there is grid connection
I really appreciate your help and explanation.
I have one more question:
Does the AC-out2 output have its own internal CT (current transformer/shunt) inside the MultiPlus?
In my case, I have an ET112 installed on AC-in.
Or is it AC-out1 that has the CT/shunt, and the MultiPlus calculates the AC-out2 consumption by subtracting AC-out1 from AC-in?
Lastly, is the maximum current for AC-out2 32 A or 16 A in transfer mode (when grid voltage is present)?
My unit is a MultiPlus-II 48V 3000VA 35/32A.
Thanks again.
No there is no separate measurement, both ac outs are summed
maximum current thru multiplus is 32A total
So thru only ac out 1 or 2 or both together, max is 32A
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