1. External influences
1.1 Classification
External influences are all non-electrical conditions that can affect electrical installations.
The standards distinguish three categories of external influences (NF C 15-100 table 51A):
environments (§ 1.2 ): designated by the first letter A, they characterize the environment in which the equipment in the electrical installation is located; they determine the characteristics that electrical equipment must have...
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External influences
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