This clause does allow the use of a 15 amp plug for a product with a full 15 amp noncontinuous load. It would seem to place a burden on the appliance manufacturer to caution the user to use it on a single receptacle circuit. This would be acceptable for appliances traditionally used that way like kitchen appliances like disposers or refrigerators, but expecting that for the hair dryer mentioned seems to be inappropriate.
The ITE standard clears up confusion by transferring the derating requirement into the product standard. I don't know if standards for hair dryers have done the same. I've come across no duty cycle limitations for this situation. Bob Johnson ITE Safety From: [email protected] [mailto:[email protected]] On Behalf Of JP Hare Sent: Tuesday, May 06, 2003 11:05 PM To: Robert Johnson; [email protected] Subject: RE: AC outlet max current Hi Bob, Indeed, the code allows 100% of the branch circuit current rating to be used for noncontinuous loads. However, I don't believe this applies to plug-and-cord loads. The NEC seems pretty explicit in this regard. Have you seen an exception to table 210.21(B)(2) and section 210.23(a)? Why would plug-and-cord loads be treated separately if they could be classified as continuous or noncontinuous anyway? Best regards, JP Hare At what duty cycle???? John Tyra This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
