Wire Amperage Chart

Please Note That Even Though THHN,THWN-2 and XHHW-2 Are Under The 90 Degree Column, Most Lugs In Panels Are only Rated at 75 Degrees. Therefore, In Most Cases, You Should Use The 75 Degree Column To Figure The Amperage Rating Of Wire. You May Still Use The 90 Degree Column To Figure Voltage Drop.

Romex (A Southwire Brand) Also Known AS NM-B Should Always Use The 60 Degree Colum