Wire Distance Chart - Outback Power Systems MX60 Installation, Programming, And User's Manual

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 fi 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
Distance in Feet
1.5% Voltage Drop
12 Volt Battery System
24 Volt PV Array
32V MPP Typical
Distance in Feet
1.5% Voltage Drop
12 or 24 Volt Battery
48 Volt PV Array
64V MPP Typical
Distance in Feet
1.5% Voltage Drop
12, 24 or 48 Volt Battery
80
(Two Wires)
(Two Wires)
System
(Two Wires)
System
Wire Gauge
#8 #6 #4
8 22 35 57
10 18 28 45
15 12 19 30
20 9 14 22
30 6 9 15
40 4 7 11
50 3 5 9
Wire Gauge
#8 #6 #4
8 45 71 114
10 36 57 91
15 24 38 60
20 18 29 45
30 12 19 30
40 9 14 23
50 7 11 18
Wire Gauge
#8 #6 #4
8 90 142 228
10 72 114 182
15 48 76 120
20 36 58 90
30 24 38 60
40 18 28 46
50 14 22 36
#2 #1/0 #2/0 #4/0
90 145 180 290
72 115 145 230
48 76 96 150
36 57 72 116
24 38 48 77
18 29 36 56
4 23 29 46
#2 #1/0 #2/0 #4/0
180 290 360 580
145 230 290 460
96 153 192 300
72 115 145 232
48 77 97 154
36 58 72 112
29 46 58 86
#2 #1/0 #2/0 #4/0
360 580 720 1160
290 460 580 920
192 306 384 600
144 230 290 464
96 154 194 308
72 116 144 224
58 92 116 172
OutBack Power Systems Inc.