Bill,
Here's a call-out that stands out for me.
Just got home from work at 7pm one night and my cellphone goes, there's an elderly lady on the other end, yelling to me about the fact that she has no Hot water.
I thought this will be easy, just a blown fuse, so I turn up there and check the ripple controls and all the fuses on the Night rate supply they're all OK, get up in the ceiling check the HW Cylinder, it's OK, but somehow I can hear water running.
I go and check the taps and the shower is running full blast (cold water).
I told her what I had found and she said that she had a guest staying over the night previous and she had had a shower prior to leaving at 0630 this morning, the shower had been running all this time, as my customer had a hearing problem.
Simple but strange, eh?. [Linked Image]