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NOTE: This is an unformatted excerpt from our online fire protection training library.

Identifying Materials & Equipment

Additional Requirements

In addition, Class I equipment shall not have any exposed surface that operates at a temperature in excess of the ignition temperature of the specific gas or vapor. Class II equipment shall not have an external temperature higher than that specified in 500.8(D)(2). Class III equipment shall not exceed the maximum surface temperatures specified in 503.5.
NOTE: This is an unformatted excerpt from our online fire protection training library.

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