Solar Design Studio
System & Load Profile
Wh
W
days
Solar Panels
W
V
A
MPPT Charge Controller
V
A
A
Battery Bank
V
Ah
Grid Assistance / Generator
Inverter
V
W
W
%
Installer Wiring Diagram
1/3 — Array & Combiner
Wire color code: Red = positive/hot · Black = negative/neutral · Green = ground
One-Line Diagram
Solar Array
2 in series x 2 strings — 2,200 W
String fuses 20 A
Combiner breaker 35 A
MPPT
60 A charge
Battery breaker 80 A
Battery Bank
48 V · 200 Ah — 9,600 Wh
Inverter DC 45 A
Inverter
1500 W AC
AC Loads
Recommended Fuses / Breakers
| Section | Protection Device | Load (A) | Rating | Voltage Rating | Suggested Part |
|---|---|---|---|---|---|
| PV Strings | String fuse — one per parallel string (x2) | 13.2 | 20 A | 1000 V DC (array side 105 V+) | gPV 10x38mm ceramic fuse, 1000 V DC, touch-safe holder |
| PV Array | Array combiner / disconnect breaker | 26.3 | 35 A | 1000 V DC (array side 105 V+) | DC-rated DIN-rail breaker in combiner box (1000 V DC) |
| MPPT Input | MPPT input breaker | 26.3 | 35 A | 1000 V DC (array side 105 V+) | DC DIN-rail breaker at MPPT PV input terminals |
| Battery / Charge Controller | Battery breaker (MPPT charge circuit) | 60.0 | 80 A | >= 60 V DC | DC-rated MCCB or hydraulic-magnetic breaker |
| Inverter DC | Inverter DC fuse/breaker (time-delay) | 34.0 | 45 A | >= 60 V DC | Class T fuse or DC-rated MCCB — time-delay to ride out motor/compressor surge |
| Battery Main | Battery main disconnect fuse | 60.0 | 80 A | >= 60 V DC | Class T fuse + manual battery disconnect switch |
Ratings use the 1.25x safety factor (NEC-style). Battery/inverter devices must be time-delay (Class T / ANL / DC-rated MCCB) so inverter surge does not trip them. Always confirm against the manufacturer manual. Battery autonomy at continuous load: 51.2 h (80% depth of discharge).
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