At the CB in off position i am reading with multimeter approx 180 - 200v and 11amps, when the unit is on it reports similar voltage but watts are low @ 30w approx. I do not understand this as surely amps x volts = watts, so i should be getting 2000w - I have not setup the unit in terms of software yet.
I have 2 x 5 panels in a row unshaded, 3 are longi and are 370w and 2 are JA 380w, then the next string are all JA 380w. very little variation between longis. I have inline fuses 15a on each string and on the one with longi a shockty diode.
Series connected with parallel string wired to Y connectors so just a + and - before the main CB see below
I have checked for blown fuses and wires not connecting. Is it likely to be the 3 longi panels?
Am wondering if wired wrong, this is what I have wired the panels, note in the middle the + connects to the + of the beginning of the next string, the common connects similar (see blue line), then both 2 poles go to the circuit breaker before unit.
2 strings of 10 panels in total
PV 3.8kw Offgrid: Victron EasySolar 2 GX 48v.35a with mppt 250/70 3000w
Panels = 7 x JA SOLAR JM60S20 380/MR 380W VOC 41.62 V VMP 34.77 V ISC 11.47 A MP 10.93 A CLASS II MAX SYS 1000V, MAX AMP 20 TOTAL 3,8KW 3 x longi 370w similar to above.
two strings 5 x 2 in series and wired series parallel, only one mppt and costly for another so all panels same direction height etc.PV Wiring = 6mm x 10m to inverter from shortest end 17m from last panel. 1 shocty diodes inline on string with 3 longi panels,
1000v/20a to prevent reverse polarity. Then 32a 1000v disconnect before going to inverter
