A professional who assists solar-energy-system installer in installing and repairing solar-energy systems for residential, commercial, or industrial use. Responsibilities include:

• Saws and drills holes in roof and walls for placement of equipment, plumbing, and wiring as directed.
• Loads and unloads truck.
• Attaches plumbing and electrical wiring to structure, using handtools.
• Cuts pipe threads and wraps insulation around pipes.
• Performs other duties as described under helper master title.