23 Nov
2014
23 Nov
'14
3:49 p.m.
On 11/23/2014 03:12 PM, tony duell wrote:
I bought a second-hand slide projector over here and
it came with about 10 mains leads
ending in assorted main plugs 2 and 3 pin, even a bayonet lampholder plug. The old owner
had
used it for illustrating his lectures and he never knew what socket he would find in the
lecture hall...
Many in the construction trades use portable tools with Hubbell
"twist-lock" (NEMA "L") plugs. I don't know why those never made
it
into the consumer market. A leaf blower with the standard 2-blade plug
will pull out of the socket on an extension cord in a heartbeat.
I believe the two-blade NEMA 1-15 plug originated with Hubbell,
strangely enough.
--Chuck