UL 486E:2019 pdf download.Equipment Wiring Terminals for Use with Aluminum and/or Copper Conductors.
6.1.2 An equipment wiring terminal that is suitable for compact-stranded conductors shall also accept allstrands of a Class B concentric-stranded conductor of the same size.
6.1.3 An equipment wiring terminal intended for use with conductors of different sizes shall have aclamping mechanism that adapts to conductors of different sizes without permanent removal or additionof parts.Some examples of clamping mechanisms are:
a) direct bearing screws with or without use of a pressure plate;b) a pressure plate or plates and a screw or screws;
c)deformation of the equipment wiring terminal barrel (crimping) using a special tool;d) a spring pressure terminal; and
e) an element for insulation-piercing or displacement.
6.1.4 Any rearrangement or adjustment of an equipment wiring terminal that is necessary to adapt it tovarious sizes of conductors shall be obvious unless the equipment wiring terminal is marked as describedin 10.11.
6.1.5 There shall be no sharp edges or comers on the outer surface of an equipment wiring terminal thatresult in damage to insulation that the equipment wiring terminal contacts.
6.1.6 The construction of an equipment wiring terminal intended to secure more than a single conductorshall be such that there will be no intermixing (direct conductor contact) between the conductors ofdifferent materials unless the equipment wiring terminal is investigated and found to meet the pertormancerequirements of this Standard and is marked in accordance with 10.20.
6.1.7 lf the method of mounting an equipment wiring terminal is such that the mounting means cannot beretightened after wires are installed,or after the equipment wiring terminal is mounted in equipment, themounting means - by inherent features or manufacturer's specifications - shall limit rotation of theterminal around its mounting means to 30 degrees or less.
