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To meet NEC compliance, the largest PV array that can be connected to the MX60 should have a
rated short-circuit current of 48 amps. The following charts show the maximum distance of various
gauge two-conductor copper wire from the PV array to the MX60 with a 1.5% maximum voltage drop.
Temperature and conduit ll corrections may be required. Using a higher voltage PV array with a low
voltage battery system allows you to use a much smaller wire size or go up to 5 times as far with the
same gauge wire.
Wire Distance Chart
12 Volt PV Array
16V MPP Typical
12 Volt Battery System
24 Volt PV Array
32V MPP Typical
12 or 24 Volt
BatterySystem
48 Volt PV Array
64V MPP Typical
12, 24 or 48 Volt
Battery System
METRIC
#8…8.37mm
2
#6…13.30mm
2
#4…21.15mm
2
#3…26.7mm
2
#2…33.6mm
2
#1/0…53.5mm
2
#2/0…67.4mm
2
#4/0…107mm
2
#8 #6 #4 #2 #1/0 #2/0 #4/0
8 22 35 57 90 145 180 290
10 18 28 45 72 115 145 230
15 12 19 30 48 76 96 150
20 9 14 22 36 57 72 116
30 6 9 15 24 38 48 77
40 4 7 11 18 29 36 56
50 3 5 9 4 23 29 46
#8 #6 #4 #2 #1/0 #2/0 #4/0
8 45 71 114 180 290 360 580
10 36 57 91 145 230 290 460
15 24 38 60 96 153 192 300
20 18 29 45 72 115 145 232
30 12 19 30 48 77 97 154
40 9 14 23 36 58 72 112
50 7 11 18 29 46 58 86
#8 #6 #4 #2 #1/0 #2/0 #4/0
8 90 142 228 360 580 720 1160
10 72 114 182 290 460 580 920
15 48 76 120 192 306 384 600
20 36 58 90 144 230 290 464
30 24 38 60 96 154 194 308
40 18 28 46 72 116 144 224
50 14 22 36 58 92 116 172
Wire Gauge
Amps
Wire Gauge
Amps
Wire Gauge
Amps
Distance in Feet
Distance in Feet
Distance in Feet