Don - There are additional details beyond the following, but in essence, there are pull-out and wire retention tests that are done for field wiring purposes that may or may not have been done for factory wiring purposes. Field wiring terminal blocks are subjected to the full range of tests normally applied to wire connectors, except for wire binding screw type terminals, which are separately evaluated.
IIRC, the ranges of wire sizes, conductor types, stranding, etc., are more prescriptive for field wiring terminal blocks, than for factory wiring terminal blocks. Regards, Peter L. Tarver, PE Homologation Engineering Nortel Networks [email protected] From: [email protected] [mailto:[email protected]] What's the major differences between a terminal suitable for Factory Wiring and one suitable for both Factory Wiring and Field Wiring?
