And how many hotels have we been to where the plugs fall out of the wall
receptacles, especially in the bathroom? Maybe higher ratings should be a
requirement in some cases. But the tamper resistant receptacles I've run into
are junk, more like user resistant.
-Dave
From: Ted Eckert [mailto:t
UL 498, the U.S. standard for plugs and receptacles, requires testing for 1000
insertion and removal cycles at the rated load. There is an additional test of
100 cycles at 150% of the rated load. Tamper resistant receptacles, the type
now required by the National Electrical Code for many residen
There are usually 'conditioned' cycles, typically just 10 to 100, for various
environmental tests and under load conditions in UL817 and/or UL489 and
UL60320-1; and several other that cannot be remembered for hot-swap and PV
installs. In my favorite compliance reference, Alice's Adventures in
W
Without sending anyone off on a long search, does anyone have an idea about
the number of mating cycles that the common consumer AC power connectors
(like the USA NEMA-15 and Euro equivalents) are rated for?
Ed Price
WB6WSN
Chula Vista, CA USA
-Original Message-
From: John Woodgate
In message
, dated Tue, 27 May 2014, Brian Oconnell
writes:
The immoral of these stories is that a connector, unless specifically
rated for a certain insertion duty cycle, should not be subject to
multiple re-insertion cycles. Components intended to interrupt load
current and/or are rate
Ted Eckert's comments ring true.
Something interesting happened this A.M. while HALT chamber running, my tech
accidently opened the 100A breakers to the chamber, while intending to open a
breaker to another machine. The resultant arcing propagated to a temperature
sensor circuit external to the
The EMC and LV Directives are 're-casts', so there should not be much in the
way of technical changes.
For the R&TTE Directive, that is being phased out and replaced with the
Radio Equipment Directive which was published last week.
There should be plenty of changes for radio products, includin
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