To avoid missing any faults, test!
Check your electrical installations with CHAUVIN ARNOUX measuring instruments.
CA 6528 Insulation Tester, offering measurements compliant with all the major standards: IEC 60364, NF C 15-100, VDE 100, etc.
CA 6133 Electrical Installation Tester, complete and compliant with the NF C 15-100, FDC 16-600 and EN 61557 standards, etc.