Solar Cable Charts
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MINIMUM Recommended Cable Size (cross section area of two core cable) for: |
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| Maximum Watts from Solar Panel/Array | 1 Meter (3.28 Feet) | 3 Meters (9.84 Feet) | 5 Meters (16.4 Feet) | 10 Meters (32.8 Feet) | 15 Meters (49.21 Feet) | 20 Meters (65.61 Feet) |
| 20 Watts | 0.5 mm2 | 0.5 mm2 | 1.0 mm2 | 1.5 mm2 | 2.0 mm2 | 2.5 mm2 |
| 30 Watts | 0.5 mm2 | 0.5 mm2 | 1.0 mm2 | 2.0 mm2 | 2.5 mm2 | 3.5 mm2 |
| 36 Watts (= 3 Amps) | 0.5 mm2 | 1.0 mm2 | 1.0 mm2 | 2.5 mm2 | 3.0 mm2 | 4.0 mm2 |
| 40 Watts | 0.5 mm2 | 1.0 mm2 | 1.5 mm2 | 2.5 mm2 | 3.5 mm2 | 5.0 mm2 |
| 50 Watts | 0.5 mm2 | 1.0 mm2 | 1.5 mm2 | 3.0 mm2 | 5.0 mm2 | 6.0 mm2 |
| 60 Watts | 0.5 mm2 | 1.0 mm2 | 2.0 mm2 | 3.5 mm2 | 5.0 mm2 | 10.0 mm2 |
| 72 Watts (= 6 Amps) | 0.5 mm2 | 1.5 mm2 | 2.0 mm2 | 4.0 mm2 | 6.0 mm2 | 10.0 mm2 |
| 80 Watts | 0.5 mm2 | 1.5 mm2 | 2.5 mm2 | 5.0 mm2 | 10.0 mm2 | 10.0 mm2 |
| 90 Watts | 0.5 mm2 | 1.5 mm2 | 2.5 mm2 | 5.0 mm2 | 10.0 mm2 | 10.0 mm2 |
| 100 Watts | 1.0 mm2 | 2.0 mm2 | 3.0 mm2 | 6.0 mm2 | 10.0 mm2 | 15.0 mm2 |
| 120 Watts (= 10 Amps) | 1.0 mm2 | 2.0 mm2 | 3.5 mm2 | 10.0 mm2 | 10.0 mm2 | 15.0 mm2 |
| 192 Watts (= 16 Amps) | 1.5 mm2 | 3.5 mm2 | 6.0 mm2 | 15.0 mm2 | 20.0 mm2 | 25.0 mm2 |
| 288 Watts (= 24 Amps) | 2.0 mm2 | 5.0 mm2 | 10.0 mm2 | 20.0 mm2 | 25.0 mm2 | 35.0 mm2 |
| 360 Watts (= 30 Amps) | 2.0 mm2 | 6.0 mm2 | 10.0 mm2 | 20.0 mm2 | 30.0 mm2 | 40.0 mm2 |
| 480 Watts (= 40 Amps) | 3.0 mm2 | 10.0 mm2 | 15.0 mm2 | 30.0 mm2 | 40.0 mm2 | 55.0 mm2 |
Cable sizes indicate the minimum recommended cross section area of two core cable...
Please see the 24 volt cable chart and AWG size comparisons below.
|
MINIMUM Recommended Cable Size (cross section area of two core cable) for:
|
||||||
| Maximum Watts from Solar Panel/Array | 1 Meter (3.28 Feet) | 3 Meters (9.84 Feet) | 5 Meters (16.4 Feet) | 10 Meters (32.8 Feet) | 15 Meters (49.21 Feet) | 20 Meters (65.61 Feet) |
| 40 Watts | 0.5 mm2 | 0.5 mm2 | 0.5 mm2 | 1.0 mm2 | 1.0 mm2 | 1.5 mm2 |
| 72 Watts (= 3 Amps) | 0.5 mm2 | 0.5 mm2 | 0.5 mm2 | 1.0 mm2 | 1.5 mm2 | 2.0 mm2 |
| 144 Watts (= 6 Amps) | 0.5 mm2 | 1.0 mm2 | 1.0 mm2 | 2.0 mm2 | 3.0 mm2 | 4.0 mm2 |
| 240 Watts (= 10 Amps) | 0.5 mm2 | 1.0 mm2 | 2.0 mm2 | 3.5 mm2 | 5.0 mm2 | 10.0 mm2 |
| 360 Watts (= 15 Amps) | 0.5 mm2 | 1.5 mm2 | 2.5 mm2 | 5.0 mm2 | 10.0 mm2 | 10.0 mm2 |
| 480 Watts (= 20 Amps) | 1.0 mm2 | 2.0 mm2 | 3.5 mm2 | 10.0 mm2 | 10.0 mm2 | 15.0 mm2 |
| 720 Watts (= 30 Amps) | 1.0 mm2 | 3.0 mm2 | 5.0 mm2 | 10.0 mm2 | 15.0 mm2 | 20.0 mm2 |
| 960 Watts (= 40 Amps) | 1.5 mm2 | 4.0 mm2 | 10.0 mm2 | 15.0 mm2 | 20.0 mm2 | 30.0 mm2 |
Cable sizes indicate the minimum recommended cross section area of two core cable in mm2.
AWG size comparisons
Many companies will supply cable using AWG sizes (American
Wire Gauge - Refers to the strength of the wires). The table below indicates the closest AWG size equivalent to our European cross section sizes.
Please Note: The gauges most widely used and readily available are even number rated; where the above table gives an odd number rating, choose the next lower even number.
For example 15.0 mm2 is equivalent to AWG 5, but you would most likely need to buy AWG 4
| Cross Section mm2 | AWG |
| 0.5 mm2 | 20 |
| 1.0 mm2 | 17 |
| 1.5 mm2 | 15 |
| 2.0 mm2 | 14 |
| 2.5 mm2 | 13 |
| 3.0 mm2 | 12 |
| 3.5 mm2 | 12 |
| 4.0 mm2 | 11 |
| 5.0 mm2 | 10 |
| 6.0 mm2 | 9 |
| 10.0 mm2 | 7 |
| 15.0 mm2 | 5 |
| 20.0 mm2 | 4 |
| 25.0 mm2 | 3 |
| 30.0 mm2 | 2 |
| 35.0 mm2 | 2 |
| 40.0 mm2 | 1 |
| 50.0 mm2 | 0 |
| 55.0 mm2 | 00 |
