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Clarification on NFPA 10 4.1.2 relating to testing and DOT 180.205

Question asked by tvins on Feb 20, 2019

In 180.205 for external examination it points to CGA document C-6, which states all foreign materials shall be removed to preform said examination. Our DOT expert has confirmed we do not have to remove Manufacture labels if they are undamaged. If manufacture labels are damaged does this affect 4.1.2 (1) or can a new label with Listing and Labeling Organization be used. Basically, does removal of original labeling render the FE unable to be installed for fire protection.