REQUIREMENTS
Printed circuit boards within a fire enclosure
must have flammability rating
94V-1 or better. If the product is submitted to Underwriters Laboratories or another NRTL, the printed circuit board must be manufactured by an approved manufacturer.The PCB's maufacturer recognized mark should be silk-screened on the PCB.
DESIGN TIPS When designing printed circuit boards which include
separate circuits, ensure that the tracks of the separate circuits are separated by the appropriate
creepage distances.
REFERENCE Complete requirements are given in IEC 60950, Clauses 2.10.5.3 and 2.10.6 (2.9.5 and 2.9.4.3)
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