This topic came up last year, but I do not know how to link to old thread.
I would expect that but I made a search and found nothing, so if anyone knows where the link is, please advise.
A fiberglass handle pole saw is better than metal,
Perhaps the weak link in electrical protection there is the rope that pulls the lopper mechanism. The rope can become wet and highly conductive. In that case using the lopper would need to be before the bamboo gets close to a hot wire. and hopefully the pole pruner is short enough that it simply cannot reach a hot wire itself.
you refer to lower line being ground, but it if it is not hot, it is neutral, not ground. Ground is the metal stake by your service or a clamp to metal piping.
This is always an inconvenient point of confusion, however on our system, at every pole this neutral/ground wire (whatever) is connected to the ground wire on the pole which is connected to the copper ground plate on the bottom of the pole under the ground. The distinction between neutral and ground is valid for inside a building where the Ground wire (usually bare or green insulated) is never part of a power carrying circuit and is present to provide a direct short to ground that will trip the breaker or fuse should the hot wire ever come in contact with the appliance frame. To add to the confusion when one gets to the main power panel in the building, the neutral and ground are connected to each other and to a ground stake driven next to the building. Additionally around here where the earth is not all that good of a conductor, a volt meter connected between the ground wire and some damp earth will show a voltage of as much as 10 volts, but usually 3 or 4 volts.
On the pole I have never heard of it being called other than ground but then people tend to get sloppy with technical terms. The voltage on the hot line on the pole is somewhat over 7000 volts
Disclaimer: The next paragraph is more technical than most bamboo growers will probably care for.
The reason for the voltage on the ground/neutral being other than zero is largely due to each of the neighborhood distribution lines being one of three phases of a three phase power grid but the ground/neutral lines are all connected. When three different neighborhoods are using different amounts of power, the ground/neutral wire tries to balance the difference and shows a voltage based on how much it has to carry to equalize things. The three neighborhoods feeding from a single 3 phase supply essentially become an unbalanced "Y" connected load. In the region where I live the earth is such a poor conductor that even grounding at every pole will not hold the line to 0 volts. If you really have to have a good ground around here you have to bury a grid of ground wires in an area of soil that has been dug up and laced with copper sulphate and that likely won't be perfect especially in dry weather. ....... Ok, I will take my engineer hat off and put my gardening straw hat back on.
Dry bamboo is pretty non-conductive, probably safer than tree branches, but with the stakes being your life, best to be careful.
Amen to that (and hopefully not being pronounced over your casket).