How to choose the correct wire gauge & size of a wire

In summary, wire gauge is a measurement of the diameter of a wire and is important because it determines the amount of electrical current that can safely flow through the wire. The correct wire gauge for an application can be determined by considering the current, length, and material of the wire, as well as using online calculators and charts. The relationship between wire gauge and current carrying capacity is that the lower the gauge number, the thicker the wire and the more current it can carry. It is not recommended to use a wire with a smaller gauge than recommended as this can lead to overheating and potentially cause a fire hazard. Using a larger gauge wire will not pose any safety concerns but may be more expensive and may not fit into smaller spaces or connectors,
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I Suppose, need to choose a correct wire gauge for a lighting circuit, how to calculate it. Input load 12V Battery, load (two 100 W bulb), .Please clarify.
 
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  • #3
I would recommend that you Google "national electric code ampacity of wires".
 
  • #4
btw, you need to choose the gauge of wire for just over, rather than just under the current it needs to carry. (It needs to be said)
 

1. What is wire gauge and why is it important?

Wire gauge is a measurement of the diameter of a wire. It is important because it determines the amount of electrical current that can safely flow through the wire without causing overheating or damage.

2. How do I determine the correct wire gauge for my application?

The correct wire gauge can be determined by considering the amount of current that will be flowing through the wire, the length of the wire, and the type of material the wire is made of. There are also online calculators and charts available to help with this determination.

3. What is the relationship between wire gauge and current carrying capacity?

The lower the wire gauge number, the thicker the wire and the more current it can carry. For example, a 12-gauge wire can safely carry more current than a 16-gauge wire.

4. Can I use a wire with a smaller gauge than recommended?

No, it is not recommended to use a wire with a smaller gauge than recommended. This can lead to overheating and potentially cause a fire hazard.

5. What are the consequences of using a wire with a larger gauge than recommended?

Using a wire with a larger gauge than recommended will not cause any safety concerns, but it can be more expensive and may not fit into smaller spaces or connectors. It is best to use the recommended wire gauge for your specific application.

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