Home, Home on the Range
B Wts.Meas.Convert Const Mech AC 1
2
DC Array 2%
Load 4%
24v
DC 24 V Ham
OTA
Solar
Misc
Notes
MyLoad
Amps Feet Feet Feet Feet Feet Feet Feet Feet Feet Feet Feet Feet
Wire Gauge Size 14 12 10 8 6 4 2 1 0 00 000 0000
1 amp 106 169 269 427 679 1080 1717 2166 2730 3444 4342 5475
2 amp 53 85 134 214 340 540 859 1083 1365 1722 2171 2738
4 amp 27 42 67 107 170 270 429 542 682 861 1086 1369
6 amp 18 28 45 71 113 180 286 361 455 574 724 913
8 amp 13 21 34 53 85 135 215 271 341 430 543 684
10 amp 11 17 27 43 68 108 172 217 273 344 434 548
15 amp 7 11 18 28 45 72 114 144 182 230 289 365
20 amp — 8 13 21 34 54 86 108 136 172 217 274
25 amp — — 11 17 27 43 69 87 109 138 174 219
30 amp — — 9 14 23 36 57 72 91 115 145 183
35 amp — — — 12 19 31 49 62 78 98 124 156
40 amp — — — — 17 27 43 54 68 86 109 137
45 amp — — — — 15 24 38 48 61 77 96 122
50 amp — — — — 14 22 34 43 55 69 87 110
LiFePO4 State Of Charge, Voltage Chart

Wire Size Chart for load. Lights. 2-4%





The dashes represent currents cannot be handled by wire size.

How charts work

1. On the left, locate the current dealing with (either array or load current.)
2. Move across to locate distance to be traveled.
3. Move up to locate size of wire to be used.
Charts Notes:
Wire Sizing Chart 12 Volt System
Max 1-way distance, in ft of two conductor copper wire for 5% voltage loss (AWG)
Max 1-way distance, in ft of two conductor copper wire for 2% voltage loss (AWG)
Max 1-way distance, in ft of two conductor copper wire from power source to load for 2% voltage drop .
May double distance if 4% loss is ok.
Never exceed 2% drop for wire connecting PV modules and batteries.
Usually 4-5% loss ok for connecting batteries and lighting circuits.
Multiply distances by 2 for 24 volts and by 4 for 48 volts.
Terminal Size 


Double 12 run as both sides of circuit count as total length

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Max A    5a    10a  15a  20a   25a  30a   40a   50a  60a  70a 
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25ft        14   10     8     8      6      6       4       4     2      2
30ft        12   10     8     6      6      4       4       2     2      2
40ft        12    8      6     6      4      4       2       2     1    1/0
50ft        10    8      6     4      4      2       2       1    1/0  1/0
60ft        10    6      6     4      2      2       1      1/0  2/0  2/0
70ft        10    4      2     2      2     1/0    2/0    2/0  3/0  4/0
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