Chalk Line to mark straight traces to the roof to align mounting rails and various elements. Wire Strippers/Cutters are applied to arrange electrical wires by getting rid of insulation and reducing them to the right length. They can be necessary to make Safe and sound and protected connections. The timeline https://www.americanarraysolar.com/4-things-to-see-when-hiring-solar-installers-in-california-in-a-budget/