Frame rails shall be 3/16” inch formed and tubular steel frame minimum. 2.2 Mast support post shall be tubular steel. 2.3 Mast shall be combined formed and tubular steel structure. 2.4 Boom shall be tubular steel structure with galvanized extension. 2.5 PTS trailers to be equipped with a removable tongue. Each trailer shall be equipped with a lifting ring that is integral to the PTS trailer and structurally sufficient to facilitate the lifting and placing of a fully equipped PTS trailer. 2.6 Battery box shall be designed with a positive hold open. 2.7 The control cabinet box shall be NEMA Type 4 waterproof encloser with a positive hold open. 2.8 Solar panel frames shall be removable and lockable, able to accommodate multiple size panels, designed to overlap for compact shipping...