Megger manufactures combines installation tester for domestic and industrial wiring, megger cm500. It is a multifunction installation tester that combines all the functions that are required to fully test domestic, commercial, and industrial fixed wiring. The combines installation tester is the first installation tester with a non-tripping loop tester and guarantees not to trip any rcd rated 30 ma or above. The memory and storage capability offers all data to display, download to a pc and on unique on-site print facility. The salient features of the combined installation tester for domestic and industrial wiring: