Hi Steve
Well said, its something I have been saying all along,
What made me think, was one day a couple of years ago, during heavy rain I saw a neighbours electricity cable sparking and banging due to water ingress in the cable, the cable ran across the fascia on a row of terraced houses, then down the external of each house to the fuseboard, this particular house the cable actually went over the window ledge, and that is the place it was sparking.
I wondered if I was cleaning the windows at that time with the carbon pole resting on the ledge, where it was sparking what the outcome would be ? probably death, i assume.
Now with solar PV the electricity it produces runs down cables, mostly down the external of the house somewhre near the PV panels, probably across the metal frames which mount the panels, this is where the problem Lies
Steve
One question I would ask, is why you so readily sub contract out cleaning of panels, armed with your knowledge.
Do you vet your subbys, and ask them to provide appropriate RAMS, dont take this as a pop at you.
Do you reccommend that there should be more regs in the cleaning of solar panels ?
To anyone else cleaning solar panels, I would strongly reccommend to stop using carbon fibre poles when cleaning them, If you do continue to clean I would reccommend you use Glass Fibre poles only.
There is much more research required on this subject, but in the meantime please be careful and fully assess the risks before you clean, if nothing else, at least know where the cables are running