An electrical wire gauge chart is a table that shows the relationship between the American Wire Gauge (AWG) size of a wire and its corresponding current carrying capacity. The chart is used to determine the correct size of wire to use for a given application.
The AWG size of a wire is determined by its diameter. The smaller the diameter, the larger the AWG number. For example, a 10 AWG wire is smaller than a 12 AWG wire.
The current carrying capacity of a wire is determined by its cross-sectional area. The larger the cross-sectional area, the greater the current carrying capacity. For example, a 10 AWG wire can carry more current than a 12 AWG wire.
The electrical wire gauge chart is used to ensure that the wire used for a given application is large enough to carry the required current without overheating. If the wire is too small, it will overheat and could cause a fire. If the wire is too large, it will be more expensive and unnecessary.
The electrical wire gauge chart is a valuable tool for electricians and other electrical professionals. It can help to ensure the safety and efficiency of electrical installations.
Here is a sample electrical wire gauge chart:
| AWG Size | Diameter (in inches) | Cross-Sectional Area (in square inches) | Current Carrying Capacity (amps) |
|---|---|---|---|
| 1 | 0.040 | 0.00050 | 10 |
| 2 | 0.051 | 0.00101 | 20 |
| 3 | 0.064 | 0.00162 | 30 |
| 4 | 0.079 | 0.00258 | 40 |
| 5 | 0.098 | 0.00392 | 55 |
| 6 | 0.120 | 0.00566 | 70 |
| 7 | 0.142 | 0.00783 | 85 |
| 8 | 0.165 | 0.01041 | 100 |
| 9 | 0.190 | 0.01345 | 125 |
| 10 | 0.216 | 0.01698 | 150 |
This chart shows that the current carrying capacity of a wire increases as the wire size increases. For example, a 10 AWG wire can carry up to 10 amps of current, while a 12 AWG wire can carry up to 20 amps of current.
It is important to use the correct size of wire for a given application. If the wire is too small, it could overheat and cause a fire. If the wire is too large, it will be more expensive and unnecessary.
By using the electrical wire gauge chart, you can ensure that you are using the correct size of wire for your application. This will help to ensure the safety and efficiency of your electrical installation.
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