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One takes a panel rated <whatever> (e.g., NEMA 4X / IP 65), cuts holes and mounts devices (e.g., a panel-mounted operator panel) rated the same. How is the NEMA / IP rating of the result defined / certified - assuming good workmanship and resp. manuf. instructions were used ?
You won't expect the workshop to "type-test" each particular panel after all!
You won't expect the workshop to "type-test" each particular panel after all!