The electrical accreditation, its definitions
By operation, one should understand "either an activity directly performed on the works or installations, or in an electrical environment. It can be of two types : electricity-related or not" (NFC 18 510, 3.4.2)
By work, one should understand an operation consisting in realizing, modifying or maintaining an electrical work or installation.
"an intervention is a simple electricity-related operation of the low voltage or very low voltage field, of short duration, performed on an electrical material or on a small part of an installation or even on the extensions of the transport works or power distribution" (NFC18 510, 10.1)
By installation or work, one should understand "a set of electrical materials implemented for the production, conversion, distribution or use of the electrical power. The word "work" is exclusively used for the public transport networks and the power distribution network and their extensions. The word "installation" applies to any electrical installation, excluding the works" (NFC18 510, 3.2.1)
By electrical material, one should understand a "material used for producing, transforming, distributing or using the electrical power, such as machine, transformer, electrical equipment, protective device, electrical duct, use materials" (NFC18 510, 3.2.2)