Hi guys - need your help please.
Installing a kitchen in a seaside bungalow, I'm testing the fused spur I've installed. EFLI of around 740 ohms. Golly, thinks I. Inspection of the board shows me a PME system (made simple for dimwits like me by putting a sticker on stating "PME"). Further inspection of CU is OK, decent Hager put in by registered NIC Approved Contractor, all very neat and correct, and more to the point had 16mm earth firmly attached.
Pop next door to said contractor, who tghen watches me test and agrees the high reading. He kindly sends one of his guys round next day, who tests at 0.43! Oh good, my Megger needs calibration, despite being done only 6 months ago. I get back home and do a quick test, and it shows 0.45 !!
Admittedly the seaside test was done on No-Trip, and the home test was against non-RCD semi enclosed fuses.
Any ideas before I run off and get my tester calibrated ? (again)
Installing a kitchen in a seaside bungalow, I'm testing the fused spur I've installed. EFLI of around 740 ohms. Golly, thinks I. Inspection of the board shows me a PME system (made simple for dimwits like me by putting a sticker on stating "PME"). Further inspection of CU is OK, decent Hager put in by registered NIC Approved Contractor, all very neat and correct, and more to the point had 16mm earth firmly attached.
Pop next door to said contractor, who tghen watches me test and agrees the high reading. He kindly sends one of his guys round next day, who tests at 0.43! Oh good, my Megger needs calibration, despite being done only 6 months ago. I get back home and do a quick test, and it shows 0.45 !!
Admittedly the seaside test was done on No-Trip, and the home test was against non-RCD semi enclosed fuses.
Any ideas before I run off and get my tester calibrated ? (again)