Wire Distance Chart Flexmax 80 - Outback Power Systems FlexMax 60 User Manual

29. Wire Distance Chart
To meet NEC compliance (North America), the largest PV array that can be connected to a FLEXmax 80
must have a rated short-circuit current of 64 amps or less and 48 amps or less for a FLEXmax 60. The
following charts show the maximum distance of various gauge two-conductor copper wire from the
PV array to the Charge Controller with a 1.5% maximum voltage drop. Temperature and conduit fi ll cor-
rections 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.
FLEXmax 60 and FLEXmax 80
and allow for a 1.5% voltage drop)
12V PV ARRAY (16v Vmp)
#8
WIRE GAUGE
10 15
20 8
30 5
40 4
50 3
60 3
70 2
80 2
24V PV ARRAY (32v Vmp)
#8
WIRE GAUGE
10 31
20 15
30 10
40 8
50 6
60 5
70 4
80 4
36V PV ARRAY (48v Vmp)
#8
WIRE GAUGE
10 46
20 23
30 15
40 12
50 9
60 8
70 7
80 6
NOTE: Numbers in bold might not meet NEC requirements
78
(The fi gures below assume THWN 75
#6 #4 #3
24 39 49
12 19 24
8 13 16
6 10 12
5 8 10
4 6 8
3 6 7
3 5 6
#6 #4 #3
49 78 98
24 39 49
16 26 33
12 19 24
10 16 20
8 13 16
7 11 14
6 10 12
#6 #4 #3
73 117 147
37 58 73
24 39 49
18 29 37
15 23 29
12 19 24
10 17 21
9 15 18
0
C two-conductor copper wire
#2 #1 #1/0
62 78 98
31 39 49
21 26 33
15 19 25
12 16 20
10 13 16
9 11 14
8 10 12
#2 #1 #1/0
124 156 197
62 78 98
41 52 66
31 39 49
25 31 39
21 26 33
18 22 28
15 19 25
#2 #1 #1/0
186 234 295
93 117 148
62 78 98
46 58 74
37 47 59
31 39 49
27 33 42
23 29 37
#2/0 #3/0 #4/0
124 157 197
62 78 99
41 52 66
31 39 49
25 31 39
21 26 33
18 22 28
16 20 25
#2/0 #3/0 #4/0
248 313 395
124 157 197
83 104 132
62 78 99
50 63 79
41 52 66
35 45 56
31 39 49
#2/0 #3/0 #4/0
372 470 592
186 235 296
124 157 197
93 117 148
74 94 118
62 78 99
53 67 85
47 59 74
METRIC
2
#8...8.37mm
2
#6...13.30mm
#4...21.15mm 2
2
#3...26.7mm
#2...33.6mm 2
2
#1/0...53.5mm
2
#2/0...67.4mm
#4/0...107mm 2