A water-resistant busway with a water drainage duct of the present invention (10) comprises a joint assembly (12) arranged between the ends of first and second busway housings (14, 16). Joint assembly (12) includes a water-resistant cover (30) releasably attached to first and second housings (14, 16)...http://www.google.es/patents/US6329598?utm_source=gb-gplus-sharePatente US6329598 - Water-resistant busway with water drainage duct
