Common cable and wire
Wire size
|
Rating
(Ampere rang)
|
Breaker Size
(Amps)
|
Use
| |
2 wire
|
3 wire
| |||
# 14
|
15A
|
15A
|
Plugs, Switches, Lights (70% of house wiring)
|
3 pin switch, split receptacles, etc
|
#12
|
20A
|
20A
|
Selected heater, Air compressors, etc.
| |
#10
|
30A
|
30A
|
Electric dryer, etc.
| |
#8
|
45A
|
40A
|
Electric rang, etc
| |
#6
|
65A
|
60A
| ||
#3
|
105A
|
100A
| ||
Kitchen Wiring
Ampere
|
Appliance
|
Wire type
|
20 amp
|
Refrigerator
|
12/2 NM
|
15-20 amp
|
Dishwasher, Food disposer
|
14/2-12/2 NM
|
20 amp
|
Microwave oven,
|
12/2 NM
|
20 amp
|
Toaster, Electric griddles, coffee pots, etc
| |
15 amp
|
Ceiling fixtures, Can lights, Under cabinet light, Strip light, etc.
|
Wire and amperes
Total current draw in Amperes
|
Cable length (meters*) and thickness (gauge)
| ||||||
0-1.2 m
|
1.2-2.0 m
|
2.0-3.0 m
|
3.0-4.0 m
|
4.0-5.0 m
|
5.0-5.8 m
|
5.9-6.7 m
| |
0-20 A
|
14 ga
|
12 ga
|
12 ga
|
10 ga
|
10 ga
|
8 ga
|
8 ga
|
36-50 A
|
12 ga
|
10 ga
|
8 ga
|
8 ga
|
6 ga
|
6 ga
|
6 ga
|
51-65 A
|
8 ga
|
8 ga
|
6 ga
|
4 ga
|
4 ga
|
4 ga
|
4 ga
|
66-85 A
|
6 ga
|
6 ga
|
4 ga
|
4 ga
|
2 ga
|
2 ga
|
2 ga
|
86-105 A
|
6 gs
|
6 ga
|
4 ga
|
2 ga
|
2 ga
|
2 ga
|
2 ga
|
106-125 A
|
4 ga
|
4 ga
|
4 ga
|
2 ga
|
2 ga
|
0 ga
|
0 ga
|
126-150 A
|
2 ga
|
2 ga
|
2 ga
|
2 ga
|
0 ga
|
0 ga
|
0 ga
|
*1 foot = 0.3048 meters. So if the cable is 15 feet long it is 15 multiply 0.3048 = 4.57 meters.
| |||||||
Gauge
|
Square millimeters
(millimeter square)
|
14 ga
|
2.5-3
|
12 ga
|
3-4
|
10 ga
|
6-8
|
8 ga
|
8-13
|
6 ga
|
13-19
|
4 ga
|
21-27
|
2 ga
|
27-35
|
0 ga
|
356-45
|
1/0 ga
|
45-54
|
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