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42.3 A wiring lead intended for field connection (see 11.1.2.11 and 62.4) shall withstand without damage
or displacement a direct pull of:
a) 20 pounds (89 N) for 1 minute applied to a lead extending from the enclosure (such as
through a knockout); and
b) 10 pounds (44.5 N) for 1 minute applied to a lead within a wiring compartment.
42.3 added October 15, 2004
43 Overload Test
43.1 Unless known to be acceptable for the application, a switch or other device in a secondary circuit
shall perform acceptably when subjected to an overload test consisting of 50 cycles of operation making
and breaking 150 percent of the rated secondary current. There shall be no electrical or mechanical
breakdown of the device, undue burning or pitting of the contacts, or opening of the fuse in the grounding
connections.
OCTOBER 15, 2004 UL 458 58A
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