Roof mount residential solar pv for existing sfd with existing residential main electrical service upgrade - 400a - the scope of work is limited to upgrades of the existing main service panel, relocation of the existing loads, new sub-panels to accomodate solar loads, and relocation of existing panels in compliance with all zoning ordinances only, does not include additional new main service panels. This permit does not exempt any existing structures from compliance with applicable building code and zoning ordinance requirements. Per section 46 (i) of the zoning ordinance, roof mounted photovoltaic systems shall not extend more than 5 ft. Above the highest point of the existing roof.