Re: Ericson 3 piece union
I'll second Bruce's comment.
I've just been going through the UL White Book, the "General Information Guide", and I'm finding Conduit Fittings (DWTT) describing fittings for use on unthreaded rigid steel conduit. The language doesn't come straight out and say "suitable for direct burial", but seems to get there by a referencing Electrical Equipment for Use in Ordinary Locations (AALZ) which includes direct burial under Wet Locations.
Edit - typo
[ September 29, 2005, 11:49 AM: Message edited by: al hildenbrand ]