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Wiring
Specification Information |
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ATA
Wire Color and Code Chart |
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| Cable
lengths carrying loads of 3 to 50 amperes at 12 volts.
* For 6 volt systems, use
next larger gauge wire. |
| LOAD
IN AMPERES |
To
10 Feet |
To
20 Feet |
To
30 Feet |
To
40 Feet |
| 4 |
18
Ga. |
16
Ga. |
14
Ga. |
12
Ga. |
| 8 |
16
Ga. |
14
Ga. |
12
Ga. |
10
Ga. |
| 15 |
14
Ga. |
12
Ga. |
10
Ga. |
8
Ga. |
| 20 |
12
Ga. |
10
Ga. |
8
Ga. |
6
Ga. |
| 25 |
10
Ga. |
8
Ga. |
6
Ga. |
4
Ga. |
| 30 |
10
Ga. |
8
Ga. |
8
Ga. |
6
Ga. |
| 40 |
10
Ga. |
8
Ga. |
8
Ga. |
6
Ga. |
| 50 |
10
Ga. |
8
Ga. |
6
Ga. |
6
Ga. |
Back
to Top |
Wire
and Cable Carrying Capacities |
| CABLE
GAUGE |
WIRE |
BATTERY
CABLE |
| 18 |
3
amps |
N/A |
| 16 |
6
amps |
N/A |
| 14 |
15
amps |
N/A |
| 12 |
20
amps |
N/A |
| 10 |
25
amps |
N/A |
| 8 |
35
amps |
N/A |
| 6 |
50
amps |
N/A |
| 4 |
N/A |
90
amps |
| 2 |
N/A |
125
amps |
| 1 |
N/A |
150
amps |
| 1/0 |
N/A |
200
amps |
| 2/0 |
N/A |
225
amps |
Back
to Top |
Auto
and Boat Wiring Guide |
| *
For 6 volt systems use next larger gauge wire. |
| Air
Conditioner |
16 |
| Back
Up Lights |
18 |
| Battery
to Switch |
12 |
| Coil
Low Side |
16 |
| Defroster |
16 |
| Directional
Signals |
16 |
| Dome
Light |
18 |
| Electric
Clock |
18 |
| Electric
Wipers |
18 |
| Gas
Gauge to Coil |
16 |
| Gas
Gauge to Tank |
18 |
| Generator
to Ammeter |
12 |
| Generator
to Relay |
16 |
| Head
lights |
16 |
| Head
Light Relay |
16 |
| Heater |
18 |
| Horn
Circuit |
16 |
| Horn
to Relay |
12 |
| Instrument
Lights |
18 |
| License
Light |
18 |
| Light
Switch to Fuse |
14 |
| Parking
Brake Release |
18 |
| Parking
Lights |
18 |
| Power
Seats |
16 |
| Power
Windows |
18 |
| Radio
to Fuse |
16 |
| Relay
to Dome Light |
18 |
| Relay
to Instrument Switch |
18 |
| Stop
Light Circuit |
18 |
| Spot
Light Circuit |
18 |
| Tail
Light Circuit |
18 |
| Trunk
Light |
18 |
| Window
Locks |
18 |
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| Automotive
‡ Marine ‡ Auto Electronics ‡ Industrial
‡ Specialty |
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