Arboriculture Terms

difference in electric energy between an energized conductor. another energized conductor. the ground or other object. Measured in volts.

relative opposition of an object. material. or medium to the flow of electrical current. Measured in ohms. Material such as copper has low resistance and is. therefore. a good conductor; material such as glass has high resistance and is therefore a good insulator (see ohm).

aerial platforms used on work sites in place of ladders and tower scaffolds.