First time I ever got a shock from a pole. It was like someone pinched me, first time I though a stone had fallen from the gutter and hit my hand. 15 shocks later I knew it wasn't a stone.
I think the extremely dry debris was creating static leccy and it slid down the pole and when it built up, it shocked me. As the dirt slid past my hand on the pole, the hairs on my arm were standing up straight. I think normally there is wet sludge lining the inside of the pole and hose which earths the poles to the vac. With it being so dry the pole earthed via my arm.
Anyone else had this? Could it be my vac on the way out?