How do I know what gauge my electrical wire is?
To calculate the gauge of stranded wire, you’ll need to double the diameter. So, if you’ve measured a wire’s diameter to be 0.005 inches (0.127 mm), multiply this value by itself. The result will be 0.000025 in (0.000635 mm). Multiply the result by the number of strands in the wire.
What is 18 gauge wire used for?
18-gauge are used for low-voltage lighting and lamp cords in 10 amps. 16-gauge are used for light-duty extension cords supporting 13 amps. 14-gauge are usedfor light fixtures, lamps, lighting circuits with 15 amps.
Should I use 12 or 14-gauge wire?
As long as you don’t put too many lights on the light circuit, you can usually control that circuit with a 15-amp breaker, as well as wire it with a 14-gauge wire. On the other hand, an outlet circuit controlled by a 20-amp breaker requires a 12-gauge wire.
How do I calculate copper wire size?
Wire Sizing Chart and Formula
- Calculate the Voltage Drop Index (VDI) using the following formula:
- VDI = AMPS x FEET รท (% VOLT DROP x VOLTAGE)
- Determine the appropriate wire size from the chart below.
Which is bigger 18 gauge or 20 gauge?
This will fit but may be slightly loose, as 20 gauge is thinner than 18 gauge. The higher the number, the smaller the gauge. If your piercing is a 18 gauge then the 20 gauge would be slightly smaller.
What is the current rating of 12 AWG wire?
In accordance with US electrical codes the max current for circuits utilizing 12 gauge wire is 20 Amps. However, 12 gauge copper wire is capable of handling much higher currents.
What is 14 AWG wire?
Electrical wire 14 AWG is a stranded copper wire, also known as THHN wire 14, that WesBell keeps in stock. It has a Thermoplastic insulation with a Nylon jacket that can be used outdoors and in conduit, but isn’t suited for underground use.
What size wire do you need for a 20 amp?
For a 20 amp circuit, use 12 gauge wire. For a 15 amp circuit, you can use 14 gauge wire (in most locales). For a long run, though, you should use the next larger size wire, to avoid voltage drops. 12 gauge is only slightly more expensive than 14 gauge, though it’s stiffer and harder to work with.
What are the different types of wire gauge?
High Gauge (24-30) High gauge wire covers everything from 24 gauge upwards.