But neglecting what local code enforcement say requi

"HorneTD" wrote in message
ink.net...
RBM wrote:
In the US they must have a UL label to be approved
wrote in message
...

Are these wall switches still legal to use?
They were real popular when I was a kid, and would
like to put them in
my house. They are the old style push buttons.
See photo here.

http://www.rejuvenation.com/fixbshow...56f6a7724b 8a

Paul


This is a small point but in some cases it becomes
important. No AHJ can require you to use only UL
listed equipment. They have to accept the listing
marks of other recognized electrical testing
laboratories. Some specialized and historic parts
manufacturers turn to ETL and other smaller labs to
keep cost down on small production runs of unique
items but that does not make them unlawful to use.
The applicable language from the US NEC is
110.3 Examination, Identification, Installation, and
Use of Equipment.
(A) Examination. In judging equipment, considerations
such as the following shall be evaluated:
(1) Suitability for installation and use in
conformity with the provisions of this Code
FPN:Suitability of equipment use may be identified by
a description marked on or provided with a product to
identify the suitability of the product for a
specific purpose, environment, or application.
Suitability of equipment may be evidenced by listing
or labeling.
(2) Mechanical strength and durability, including,
for parts designed to enclose and protect other
equipment, the adequacy of the protection thus
provided
(3) Wire-bending and connection space
(4) Electrical insulation
(5) Heating effects under normal conditions of use
and also under abnormal conditions likely to arise in
service
(6) Arcing effects
(7) Classification by type, size, voltage, current
capacity, and specific use
(8) Other factors that contribute to the practical
safeguarding of persons using or likely to come in
contact with the equipment"

Notice that Underwriters laboratories is not
mentioned by name The reference to listing or
labeling in the fine print note are not part of the
code itself and are therefore not enforceable as such
and the listing and labeling of one lab is a valid as
any other for code enforcement purposes.
--
Tom Horne
--
Tom Horne