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Both the osha 10 and 30 cover electrical hazards in depth. But neither will train to work safely with it. By clearance you mean approach distance? It covers that, not tree work, which is covered in the one Mellow posted. You may have to travel to do one. The osha classes are required on most big...

Show them the same stuff that they show in the osha 30 class: the slow painful progression of how it takes to die from an electrical injury. At first a small entrance and exit point. After a few days, entire limbs cut open to debride the necrotic tissue, which is a pointless exercise for most...