Durable and Accurate: Built to last, the poles are aluminum pipematerial. Crossarms are wood. Electrically correct, the aluminum poleseffect the conductivity which should be assumed for actual poles. Leadsfrom the poles and the neutral connect to the ground side on the source(transformer). Operation: To quickly test any proposed configuration,just depress the transformer foot switch to energize a fault on thesystem. If the light glows and the bell sounds on the #worker,# thisindicates the grounding system in place fails to provide protection. Or,if no such signals occur, the scheme of grounding connections doescreate a protective zone of equalized potential at the worksite. Toanswer a multitude of #what-if# questions from the various personnelconcerned with grounding practices, the kit transformer rapidly recycleswhile you rig the grounding leads for the next test. A #ready# lightcomes on as soon as the transformer is reset.