 Re: insulation resistance with a Fluke 1652
Just saw this again & remembered that on Thursday (yesterday) this happened to me.
At 16:00 on my way home I take a call on the mobile from a bathroom fitter asking if I'd mind dropping by to give him a hand, as he was getting funny results (as in a fail 0.33Meg) on a ringmain doing IR test "I'll pay you for your time, cant work it out all I've done is extend the ring to power a shower"
Why did he call me, because I changed the cu a month ago & left one of my contact labels on the cu. I had no problems with any of the circuits when I tested it.
Anyway turned up as it was on my way home, found him upstairs poking 500v round the ring showing me the 0.33meg result " there see, are you sure you tested it because i've checked your cert & you got >200Meg"
So pointed out that in my oppinion it was a neon some where, told him to do a walkround & unplug the trailing lead with neon & retest..................... >200Meg yeeeeha
(it feels sooooooooo good when your right dont it)
His response " well thats the sort of thing that they should teach on the part P course, I didnt know what to do as its the first failed IR reading I've had"
I felt sorry for him he was at the crying stage when he called me, so told him to call if unsure in the future............that I may live to regret but heyho goodwill to all. |