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Are the lugs and power distribution connector (PDC) on PowerPacT circuit breaker lugs approved for use with fine stranded wire?

Product Line:
PowerPacT H, J, L M, P, R Circuit Breakers

Resolution:

Neither mechanical nor compression lugs, including power distribution connectors (PDC), for PowerpacT B, H, J, L, M, P and R frame circuit breakers have undergone the certification testing required by UL 486 for approval for use with Class D wire, also known as fine-stranded wire, welder's cable, or DLO diesel locomotive cable. UL testing verifies connection resistance and connection security under heat cycling mechanical pull-out conditions.

The risk of the fine strands of Class D cable getting caught up in the wire binding screw of mechanical lugs, causing a false torque reading resulting in a loose connection, could potentially be lessened through the use of a sleeve / ferrule / thin copper shim, but the specifications of such a sleeve or ferrule have not been defined nor has the required testing been done.
With compression lugs there is no issue with threads, but consistent proper compression of the fine strands for low resistance has not been verified by controlled testing.
Mechanical pull-out testing has not been done for either compression lugs or mechanical lugs with ferrules or sleeves.

Only class B and C cable has been certified for use in PowerpacT B, H, J, L, M, P and R frame circuit breaker lugs per UL 486, which includes heat cycling and mechanical pull-out testing.