A wire gauge chart helps you determine the wire gauge that matches the amps you need for the project. When purchasing wire, you'll see a few different numbers on the packaging or product description.

The calculated minimum ampacity of a conductor is 200A. Type XHHW-2, 600V, copper wire is being used on the circuit. The parameters found at the top of Table 310.15(B)(16) are met in this case, so we ...

The slide tool, titled “Rooftop Ampacity Adjustments,” allows users to determine the adjusted ampacity for various copper wire sizes and types, based on estimates of the temperature inside the conduit ...