Chalk Line To mark straight traces about the roof to align mounting rails together with other elements. Wire Strippers/Cutters are applied to arrange electrical wires by getting rid of insulation and chopping them to the right length. They may be required to make safe and secure connections. A Do it https://www.americanarraysolar.com/what-to-expect-during-your-solar-panel-installation-with-american-array-solar/