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SFSystem Planningand Assembly Installation Manual |1 S U N POW E R SF System Planning and Assembly Installation Manual <br />9. Installing the end caps: <br />Attach the end caps to the ends of the rails by securing with <br />the truss head sheet metal screws provided (Fig. 10). <br />Part III. Installing grounding <br />[3.1.] Install grounding lugs to modules:Figure 11. <br />Rails may be grounded in three ways: <br />1. Grounding hole located on splice bar <br />2. Pre-drilled holes at end of rail <br />3. Field drilled hole on the rail <br />Grounaing Lug <br />-[3.2.] Installing grounding lugs to rail: <br />Figure 10. End cap installation. <br />Frequently asked questions about standoffs and roof variations <br />Drill hole 0.201" (#7 dritl) into the SF rail and attach <br />groun{ling hug using a #8 x 1 W stainless steel bolt. <br />For optimal pecformance, Sun.Power PV modules <br />must only be used in conjigurations where the <br />positive polarUy of the PV array is connected to <br />ground. Failure to comply with this requirement <br />will reduce the pedormance of the system and <br />invalidate SunPower's Limited Power Warrantyfor <br />PV Modules. <br />How high above the roof is an array? <br />The answer depends on the orientation of your L.feet and <br />che length of your standoffs, if used. See the illustration <br />appropriate to your installation. <br />How can ] seal the roof penetration required when <br />standoffs are lagged below the roofing material? <br />Many types and brands of flashing can be used with SF <br />System. SunPower offers Oatey® "No-Call" flashings for <br />its steel standoffs and Oatey® or SunPower flashings for its <br />aluminum two-piece standoffs. <br />R <br />Module <br />thickness <br />varies <br />--IF <br />For more information on grounding the system <br />correctly, visit ourwebsiteat www.sunpowercorp. <br />com/inverters or contact SunPower technical <br />support at 1-877-SUN-0123. <br />A <br />Module <br />& vanes <br />thickness <br />1 -9 Module -7 <br />thickness <br />varies *-- Ill - 4/8.*1,8- <br />1 <br />34- 4 Standolf height 1 <br />11 13/4-2 1/8-(3-.4-.6-..77- 1 <br />... <br />00*./8-1 1 <br />Lc=IE,-r--1