Don,
I am aware of only one difference - Spacing.
It is considered that larger spacing between connections are needed for
field terminals to allow for, shall we say, potentially lesser controlled
installation circumstances practices. Factory wiring is usually
performed in accordance with a
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
In general, for field wiring terminals per EN60950:
* must accept a range of conductors sizes normally expected to be used
* use screws or nuts - no solder, crimping or special terminal on
conductor (unless a special power cord assembly is being replaced)
* the screw or nut
The CD is available through the IEEE EMC Society for $40 dollars.
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