Current Loading
Amps |
12 Volts Cable Thickness Table©Boat Electricals Ltd 3/9/2010 Critical Applications: Electronics, Bilge Pumps, Navigation Lights, Fluorescent Deck Lights |
||||||
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
|
|
Total Circuit Length From Source To Device And Back To Source i.e 2 x Distance to Equipment |
||||||
1 |
0.5mm2 |
0.5mm2 |
1mm2 |
1mm2 |
1.5mm2 |
1.5mm2 |
2.5mm2 |
2 |
0.5mm2 |
1mm2 |
1.5mm2 |
2.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
5 |
1mm2 |
1.5mm2 |
4mm2 |
6mm2 |
6mm2 |
6mm2 |
10mm2 |
10 |
1.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
16mm2 |
15 |
2.5mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
25mm2 |
20 |
4mm2 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
25 |
4mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
50mm2 |
30 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
40 |
6mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
70mm2 |
50 |
10mm2 |
16mm2 |
25mm2 |
50mm2 |
50mm2 |
70mm2 |
70mm2 |
60 |
10mm2 |
25mm2 |
35mm2 |
50mm2 |
70mm2 |
70mm2 |
70mm2 |
70 |
10mm2 |
25mm2 |
35mm2 |
70mm2 |
95mm2 |
95mm2 |
120mm2 |
80 |
16mm2 |
35mm2 |
50mm2 |
70mm2 |
95mm2 |
95mm2 |
120mm2 |
90 |
16mm2 |
35mm2 |
50mm2 |
70mm2 |
95mm2 |
95mm2 |
120mm2 |
100 |
16mm2 |
35mm2 |
50mm2 |
70mm2 |
95mm2 |
95mm2 |
120mm2 |
|
3m (10ft) |
6m (20ft) |
10m(30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m(100ft) |
Current Loading
|
12 Volts Cable Thickness Table ©Boat Electricals Ltd 3/9/2010 Non-Critical Applications: Windlass, Flood Lights, Cabin Lights etc. |
||||||
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
|
|
Total Circuit Length From Source To Device And Back To Source i.e 2 x Distance to Equipment |
||||||
1 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
1mm2 |
1mm2 |
1mm2 |
5 |
0.5mm2 |
0.5mm2 |
1mm2 |
1.5mm2 |
2.5mm2 |
2.5mm2 |
2.5mm2 |
10 |
0.5mm2 |
1mm2 |
2.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
6mm2 |
15 |
1mm2 |
1.5mm2 |
2.5mm2 |
4mm2 |
6mm2 |
6mm2 |
10mm2 |
20 |
1mm2 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
10mm2 |
25 |
1.5mm2 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
30 |
1.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
16mm2 |
40 |
2.5mm2 |
4mm2 |
10mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
50 |
2.5mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
25mm2 |
60 |
4mm2 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
70 |
4mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
35mm2 |
80 |
4mm2 |
10mm2 |
16mm2 |
25mm2 |
35mm2 |
35mm2 |
50mm2 |
90 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
100 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
|
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
Note: The above tables are for guidance purposes only.
No allowance has been made for temperature increases due to bundling or for high ambient air temperatures.
24 Volt Cable Thickness Guide
Work out the total current loading in Amps for each cable. Amps can be calculated by dividing watts by the voltage.
Measure (or estimate) how long the cable run will be and double this number to arrive at the total circuit length.
Current Loading
Amps |
24 Volts Cable Thickness Table©Boat Electricals Ltd 3/9/2010 Critical Applications: Electronics, Bilge Pumps, Navigation Lights, Fluorescent Deck Lights |
||||||
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
|
|
Total Circuit Length From Source To Device And Back To Source i.e 2 x Distance to Equipment |
||||||
1 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
1mm2 |
1mm2 |
1mm2 |
2 |
0.5mm2 |
0.5mm2 |
1mm2 |
1mm2 |
1.5mm2 |
1.5mm2 |
2.5mm2 |
5 |
0.5mm2 |
1mm2 |
1.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
6mm2 |
10 |
1mm2 |
2.5mm2 |
4mm2 |
6mm2 |
6mm2 |
6mm2 |
10mm2 |
15 |
1.5mm2 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
20 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
16mm2 |
25 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
30 |
2.5mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
25mm2 |
40 |
4mm2 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
50 |
4mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
35mm2 |
50mm2 |
60 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
70 |
6mm2 |
10mm2 |
16mm2 |
35mm2 |
35mm2 |
50mm2 |
50mm2 |
80 |
6mm2 |
16mm2 |
25mm2 |
35mm2 |
50mm2 |
50mm2 |
70mm2 |
90 |
10mm2 |
16mm2 |
25mm2 |
50mm2 |
50mm2 |
70mm2 |
70mm2 |
100 |
10mm2 |
16mm2 |
25mm2 |
50mm2 |
50mm2 |
70mm2 |
70mm2 |
|
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
Current Loading
Amps |
24 Volts Cable Thickness Table ©Boat Electricals Ltd 3/9/2010 Non-Critical Applications: Windlass, Flood Lights, Cabin Lights etc |
||||||
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
|
|
Total Circuit Length From Source To Device And Back To Source i.e 2 x Distance to Equipment |
||||||
1 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
5 |
0.5mm2 |
0.5mm2 |
0.5mm2 |
1mm2 |
1mm2 |
1mm2 |
1.5mm2 |
10 |
0.5mm2 |
0.5mm2 |
1mm2 |
1.5mm2 |
2.5mm2 |
1mm2 |
2.5mm2 |
15 |
0.5mm2 |
1mm2 |
1.5mm2 |
2.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
20 |
0.5mm2 |
1mm2 |
2.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
6mm2 |
25 |
1mm2 |
1.5mm2 |
2.5mm2 |
4mm2 |
4mm2 |
6mm2 |
6mm2 |
30 |
1mm2 |
1.5mm2 |
2.5mm2 |
4mm2 |
6mm2 |
6mm2 |
10mm2 |
40 |
1mm2 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
10mm2 |
50 |
1.5mm2 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
60 |
1.5mm2 |
4mm2 |
6mm2 |
10mm2 |
10mm2 |
16mm2 |
16mm2 |
70 |
2.5mm2 |
4mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
80 |
2.5mm2 |
4mm2 |
10mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
90 |
2.5mm2 |
6mm2 |
10mm2 |
16mm2 |
16mm2 |
25mm2 |
25mm2 |
100 |
2.5mm2 |
6mm2 |
10mm2 |
16mm2 |
25mm2 |
25mm2 |
25mm2 |
|
3m (10ft) |
6m (20ft) |
10m (30ft) |
15m (50ft) |
20m (65ft) |
25m (80ft) |
30m (100ft) |
Note: The above tables are for guidance purposes only.
No allowance has been made for temperature increases due to bundling or for high ambient air temperatures.