太阳能板的安装Install and Mounting SolarPV (NXPowerLite).pdfVIP

Residential/Commercial Residential/Commercial RReessiiddeennttiiaall//CCoommmmeerrcciiaall Solar PV installations Solar PV installations SSoollaarr PPVV iinnssttaallllaattiioonnss Basic information and installation guides for roof mounted systems (Ed Larsen, Building Official) May-June 2008 City of Flagstaff/Project Review Section Design and Permits � A building permit is required for a Solar PV or thermal solar system. Staff has prepared a Memorandum (Memo #106; which is periodically updated) on the submittal requirements. These permits are not issued over-the-counter. � If the system is to be connected to the grid (APS utility system), then a copy of the approved interconnect agreement and a licensed contractor is required for the final installation and “green tag”. For off-grid or battery systems, a licensed contractor is not necessarily required. � If the system is not roof mounted, then the arrays must be protected from the general public. This can be done by establishing racks at eight (8) feet or greater above the ground level or by providing fencing or a skirting system around the underside of the panels to prevent contact with wiring. � Permits are not issued over the counter, but require plan review. Simplified drawings are allowed. A one line or block schematic is required and a three-line wiring diagram (indicating wiring sizes and all leads) is also required. Design and Permits - continued � There are some minor conflicts between Article 690 of the 2005 NEC and the wiring sizes for various breakers. The inverter specifications should be carefully compared to the general requirements [i.e., a PV system may only require #10s or #12 AWG wiring on the AC side and the max current (amps) may be 30 or less; however, the designer goes for the maximum size for the