Anybody have any extensive experience with
testing and inspection?
On a number of occasions over the years have tested Rcd's for compliance with trip times and found that the trip time registered at 30ma is faster than that at 150ma. Use a Chauvin Arnoux 6115 installation tester calibrated anually by the manufacturer. This has occured on all sorts of different makes of rcd's over time.
Anyone else ever experienced anything like it? Todays test was on a Federal GFI 30ma trip. Test at 30ma 12.4ms test at 150ma 32.8ms. Thoughts gentlemen please!