8. Special cases
8.1 Confined conductive enclosures (crawl spaces, narrow staircases)
Ambient lighting is supplied at extra-low safety voltage (ELSV) by a 230/25 volt safety transformer located outside the enclosure.
An IP 447 enclosure is used to protect the luminaire against external influences and the SELV (25 volts) against indirect contact.
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Special cases
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Websites
Energy suppliers http://www.energie-info.fr
Organisme professionnel de prévention du bâtiment et des travaux publics (OPPBTP) (Professional organization for building and public works prevention) http://www.oppbtp.com/
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