Kitty,
 I've found that it depends on where it's being manufactured, some
places that I have worked at had very strict requirements, and others just
wanted it to be hand assembled.    Call a Manufacturing Rep. that I know
Terry McNulty at McNulty & Assoc. 980-9868, he has a booklet from an
assembly house in Minnesota. (Altron Inc.)  that has very good guidelines
to follow.  You could also call the IPC and see what documents they
have, and of course UL.  But first find out what requirements that you 
need to meet and where it will be assembled, then at least you know
what you're shooting for.

Karl Bates
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