I’m watching this arborist on YouTube and they have a truck with a bucket on an arm so they can reach heights without climbing. On/after a rainy day the bucket will accumulate water and they mentioned they can’t drill a hole to drain because it will compromise the grounding.
My understanding of grounding/electricity doesn’t explain this. Can someone help me understand why this would make a difference?
Edit: I get it, I/he should have said “electrical isolation” instead of “grounding”. Either way, a hole allowing a stream of dirty water seems to be the answer here. Thanks 🙂
In: Physics
The insulated bucket prevents current from flowing through the arborist to earth in the event that the arborist accidentally touches live apparatus. He will technically be live or energised, but the electricity can’t get to the earth because the current is stopped by the bucket insulation.
If you put a hole in the bucket, water (which is conductive) can form a stream out of the bucket to the ground (or to a part of the bucket truck which is not insulated and in contact with the ground). In this case, if the arborist touches the live apparatus, the electricity has a path through him to earth, which would be very bad for him.
Incidentally, the bucket insulation, even in perfect condition, will do nothing to protect the arborist if he touches two live (separate phase) components of the apparatus or live apparatus and something else that is connected to earth.
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