Whether you're installing, extending, or rewiring a circuit, finding out the wire gauge and amperage you will need is a key ...

For example, the diameter of an 18 gauge wire is 1.02mm, while the smaller number 12 gauge is 2.05mm, more than twice the diameter. This relationship makes more sense if you think of how many ...

Safe, durable electrical connections begin with ... Most often, the gauge will be printed on the wire’s insulation. 12-gauge and 14-gauge wires are very common, and a cool trick to identify ...