Hello:

I have a question about the interpretation of UL 1950 / En 60950  sec 4.4.6     
Fire enclosure construction.

"The following constructions are considered to satisfy the requirement without 
test:
.... openings in the bottom, each not larger than 40 mm sq  under:       @      
components of FLAMMABILITY CLASS V-1 or better, or  FLAMMABILITY CLASS HF -1 or 
better, or       @      parts made of material of FLAMMABILITY CLASS V-1 or 
better, or FLAMMABILITY CLASS HF -1 or better;"

Is there any correlation between VW-1 wire and  UL 94 V-1 FLAMMABILITY  CLASS ? 
 
That is to say if all parts are V-0 or V-1 and wires of VW-1 would this 
construction be considered to comply?
 
What is the best way to get information on the various wire classes UL 1581, 
1180, 3239 etc.
Your input is appreciated!

Terry J. Meck
[email protected]


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