Hello, My interpretation of the criteria listed in 5.4.9 is if, under simulated fault conditions, a hole forms in the enclosure, that is not necessarily a failure of the product to remain safe. Would you agree?
The criteria seems to indicate that if there is no: 1. propagation of fire beyond the product. 2. emission of molten metal, and 3. no non-compliance with another section of the standard due to enclosure deformation, the product meets the requirements. This may not be a situation you care to allow from a product quality or customer satisfaction point of view, but it is not a failure of the product to comply to the requirements. Note: The assumption is that the product does comply with 4.4.2 and 4.4.3 Regards, Bob Brister Digital Equipment Corp. Bob Brister
