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October 23, 2008

Mtg: Short Circuit Current Rating – an Alternate Approach

by @ 2:01 pm. Filed under ALL, Computers/Software, Electrical/Power, Engineering Mgmt

TUESDAY November 18, 2008
SCV Product Safety Engineering Chapter
Speaker: Edward Karl, Applied Materials
Time: Optional dinner at El Torito at 5:45 PM; Presentation at Applied Materials Bowers Cafe at 7:00 PM
Cost: none (no-host dinner)
Place: El Torito Mexican Restaurant, 2950 Lakeside Drive, Santa Clara; talk at Applied Materials, Bowers Café, 3090 Bowers Ave, Santa Clara
RSVP: not required

The 2005 National Electrical Code (NFPA 70) had a new marking requirement for industrial machinery control panels: add short circuit current rating (SCCR) to the equipment nameplate.? What does SCCR mean and how do you determine it?? The NEC noted, â??UL 508A-2001, Supplement SB, is an example of an approved method.???
Since local authorities have started enforcing the SCCR marking requirement, the shortcomings of the UL 508A method and the absence of any alternative â??approved??? method are becoming more apparent.
This presentation looks at SCCR, touching on why it’s required and the UL 508A method of evaluating it, and focuses on the new SEMI method as an alternative approach.? If you still are a bit confused about SCCR, you need to hear this talk.

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