20-ampere, 1000-volt, 3-phase, 3-pole, 4- wire and intended for use with 20-ampere, 1000-volt, 3-phase, 3-pole, 4- wire receptacles and inlets, respectively.60-ampere, 208-volt, 3-phase, 3-pole, 4- wire and intended for use with 60-ampere, 208-volt, 3-phase, 3-pole, 4- wire receptacles and inlets, respectively.30-ampere, 480-volt, 3-phase, 3-pole, 4- wire and intended for use with 30-ampere, 480-volt, 3-phase, 3-pole, 4- wire receptacles and inlets, respectively.An attachment plug and cord connector for the connection of a truck or trailer shall be rated in accordance with one of the following: If a right-angle cap is used, the configuration shall be oriented so that the grounding member is farthest from the cord. The attachment plug(s) and cord connector(s) shall be listed, by itself or as part of the power-supply cable assembly, for the purpose and shall be molded to or installed on the flexible cord so that it is secured tightly to the cord at the point where the cord enters the attachment plug or cord connector. Where a flexible cord is provided with an attachment plug and cord connector, they shall comply with 250.138(A). ![]()
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