Where connected to a branch circuit
supplying two or more receptacles
ratings shall conform to the values listed in Table 210.21(B)(3), or, where rated higher than 50 amperes, the receptacle
rating shall not be less than the branch-circuit
Exception No. 1: Receptacles installed exclusively for the use of one or more cord-and-plug-connected arc welders shall be permitted to have ampere ratings not less than the minimum branch-circuit conductor ampacity determined by 630.11(A) or (B) for arc welders.
Exception No. 2: The ampere rating of a receptacle installed for electric discharge lighting shall be permitted to be based on 410.62(C).
Table 210.21(B)(3) Receptacle Ratings for Various Size Circuits
|Circuit Rating (Amperes) ||Receptacle Rating (Amperes) |
|15 ||Not over 15 |
|20 ||15 or 20 |
|30 ||30 |
|40 ||40 or 50 |
|50 ||50 |