replying to Nate Nagel , Let's get it right! wrote:
njnagel wrote:
On 12/16/2013 11:44 AM, Mis-application of listed appliances ---
Your argument is somewhat valid, but you're not going to get anywhere
with it as the NEC specifically allows the use of NEMA 5-15 or
combination 5-15/5-20 receptacles on a 20A branch circuit.
This is the ONLY instance that I'm aware that a receptacle is allowed
which accepts a plug/cord cap of a lower nominal amperage than the
circuit breaker, however.
nate
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replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
I agree that NEC allows using a NEMA 5-20 and 5-15 receptacle protected
with a 20-ampere branch circuit breaker, and as long as you don't
interface a Listed appliance rated at not more than 15-amperes with these
receptacles, it's a non-problem.
However, the mere fact that someone provide such interfaces, and those
interfaces can be used by "Listed" cord connected equipment is proof that
NEC Article 110.3 (A) (8) was not done
110.3 Examination, Identification, Installation, and Use of Equipment
(A) Examination. In judging equipment, considerations such as the
following shall be evaluated:
(8) Other factors that contribute to the practical safeguarding of persons
using or likely to come in contact with the equipment.
These are the responsibilities of the engineer of record as well as the
local regulatory and code inspection agency. They have totally ignored
the "Testing for Public Safety**" aspect of the "Listing" effort.
They've failed miserably with respect to this NEC article. The public is
not protected because the require interfaces (receptacles) for "Listed"
equipment utilizing NEMA 5-15 plugs and cord sets has not been provided
for "Protection" as defined by NEC. Additionally, try to find a power
cord set with NEMA 5-15 plug in your McMaster Carr catalog that's rated
for more than 15 amperes! If there are any, then "ALL" listed cord
connected equipment would have to use it. We have NEMA 5-20 plugs for
that ... and they won't interface with a NEMA 5-15 receptacle for good
reason!
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