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.

What Most Techs Get Wrong About Wire Sizing When a 10-gauge wire on a 50-amp breaker is OK. By Bryan Orr. ... All of these ratings can be found in NEC (NFPA 70) Table 310.15(B)(16) in detail, but as ...