Title basically says it all!
I am having a rough time figuring this out, or maybe I am just over thinking. I am not quite sure lol. Here is what is going on. I am going to be doing everything electric, tankless water heater (this one will be a problem for the system I’m thinking), mini split a/c/heat. Cooking and all.
i am planning on either doing 21 305 watt sunpower panels at 64.2 open circuit VOC, 54.7v max power voltage, 5.58 amp max current, 5.96a short circuit.
or doing 21 345 watt Hanwha QCell panels. 9.64a short circuit, 47.46 open circuit voltage, current max power 9.09, 37.93 max voltage power.
so here is where my problem goes... most combiners im seeing do 150v or 300v... I’m completely confused and do not know where to go with combiners or if I even need one lol.
I honestly don’t know where to do fuses as it seems every panel is suppose to be fused? Or is this the point of the combiner?
most charge controllers seem to go from 300v up to 500-600v, (saw one at 900v for a 10kw system). But then I get even more confused lol, because if I do say 3 strings of 7 panels that’s going to exceed the voltage on any of them no matter what panel I choose... even if I do it by the strings that’s 280 a string or so if I do 40v or 420 if I do 60v...
most inverters I’ve seen accept one positive and one negative from the PV system... so I was like ok maybe I combine those 3 strings at the combiner and then run those 3 strings into one string into the inverter... but that just won’t work cuz we go past the voltage limits...
basically I’m trying to figure out the best way to set this system up, and I’m driving myself crazy trying to figure out how I’m the world to wire it
I am having a rough time figuring this out, or maybe I am just over thinking. I am not quite sure lol. Here is what is going on. I am going to be doing everything electric, tankless water heater (this one will be a problem for the system I’m thinking), mini split a/c/heat. Cooking and all.
i am planning on either doing 21 305 watt sunpower panels at 64.2 open circuit VOC, 54.7v max power voltage, 5.58 amp max current, 5.96a short circuit.
or doing 21 345 watt Hanwha QCell panels. 9.64a short circuit, 47.46 open circuit voltage, current max power 9.09, 37.93 max voltage power.
so here is where my problem goes... most combiners im seeing do 150v or 300v... I’m completely confused and do not know where to go with combiners or if I even need one lol.
I honestly don’t know where to do fuses as it seems every panel is suppose to be fused? Or is this the point of the combiner?
most charge controllers seem to go from 300v up to 500-600v, (saw one at 900v for a 10kw system). But then I get even more confused lol, because if I do say 3 strings of 7 panels that’s going to exceed the voltage on any of them no matter what panel I choose... even if I do it by the strings that’s 280 a string or so if I do 40v or 420 if I do 60v...
most inverters I’ve seen accept one positive and one negative from the PV system... so I was like ok maybe I combine those 3 strings at the combiner and then run those 3 strings into one string into the inverter... but that just won’t work cuz we go past the voltage limits...
basically I’m trying to figure out the best way to set this system up, and I’m driving myself crazy trying to figure out how I’m the world to wire it
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