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Tech Brief <br />9OSVROKJ-XU[TJOTM <br />For Greater Safety & Lower Cost <br />Traditionally, solar modules are grounded by attaching <br />lugs, bolts or clips to the module frame, then connecting <br />these to a copper conductor that runs throughout the <br />array. This process adds time and cost to the installation, <br />and often results in improper grounding, creating <br />VLJQLFDQWORQJWHUPVDIHW\ULVNV <br />The IronRidge Integrated Grounding System solves these <br />challenges by bonding modules directly to the mounting <br />rails. This approach eliminates separate module <br />grounding hardware, and it creates many parallel <br />grounding paths throughout the array, providing <br />greater safety for system owners. <br />Integrated Grounding System <br />(UTJOTM9ZXGV <br />Bonding Straps are used to <br />ERQGUDLOWRUDLOFRQQHFWLRQV <br />They are only required on the <br />rail with the grounding lug. <br />-XU[TJOTM3OJ)RGSV <br />Each Grounding Mid Clamp pierces through the <br />anodized coatings of both the module frame and <br />the mounting rail to form secure electrical bonds, <br />which are repeated throughout the array. <br />-XU[TJOTM2[M <br />A single Grounding Lug <br />connects an entire row <br />of PV modules to the <br />grounding conductor. <br />hese <br />ng <br />-XU[TJOTM3OJ <br />Each Grounding Mid <br />anodized coatings of <br />the mounting rail to f <br />whic h are repeated t <br />1 <br />(UTJOT <br />Bonding <br />ERQG UDLO <br />2 <br />3 <br />/TYZGRRGZOUT5\KX\OK] <br />/TYZGRR8UUL'ZZGINSKTZY <br />ڞ,QVWDOODSSURSULDWHURRIDVKLQJDQGRUVWDQGRIIIRUURRIW\SH <br />ڞ$WWDFK/)HHWWRDVKLQJRUVWDQGRII <br />6XKVGXK8GOR)UTTKIZOUTY <br />ڞ,QVHUWVSOLFHLQWRUVWUDLOWKHQVHFXUHZLWK%RQGLQJ6WUDSDQG <br />VHOIGULOOLQJVFUHZ <br />• Slide second rail over splice, then secure with opposite end of <br />*URXQGLQJ6WUDSDQGVHOIGULOOLQJVFUHZ <br />3U[TZ -XU[TJ8GORY <br />ڞ$WWDFKUDLOVWR/)HHWDQGOHYHOUDLOV <br />• Install one Grounding Lug per row of modules. <br />• Connect Grounding Lug to grounding conductor. <br />/TYZGRR3UJ[RKY )RGSVY <br />ڞ,QVWDOOUVWPRGXOHXVLQJ(QG&ODPSVDQG*URXQGLQJ0LG&ODPSV <br />• Install additional modules using Grounding Mid Clamps. <br />• Finish row with a second pair of End Clamps. <br />:KYZOTM )KXZOIGZOUT <br />The IronRidge Integrated Grounding <br />6\VWHPKDVEHHQWHVWHGDQGFHUWLHGWR <br />8/E\,QWHUWHN*URXSSOF <br />UL 2703 is a proposed UL standard <br />for evaluating solar module mounting <br />and clamping devices. It ensures these <br />devices will maintain strong electrical and <br />mechanical connections over an extended <br />period of time in extreme outdoor <br />environments. <br />The testing process closely mirrors that <br />of UL 1703, the solar module testing <br />standard, including temperature and <br />humidity cycling, electrical and mechanical <br />load testing, and manufacturing quality <br />reviews. <br />1 <br />2 <br />3 <br />4 <br />n/XUT8OJMK/TI'RRXOMNZYXKYKX\KJ<OYOZ]]]OXUTXOJMKIUSUXIGRRLUXSUXKOTLUXSGZOUT<KXYOUT <br />The Grounding Mid Clamp has proven robust in grounding solar <br />modules with a box frame construction, a range of anodization <br />WKLFNQHVVHVDQGQRPLQDOOHQJWKVRIڙRUOHVV <br />All solar modules listed to UL 1703 and with frame construction <br />within the parameters stated above are compatible with the <br />IronRidge Integrated Grounding System. <br /> -UZUOXUTXOJMKIUSOM <br />Dimension Range <br />A PPPP <br />B PP PLQLPXP <br />3UJ[RK,XGSK)USVGZOHOROZ_ <br />Any module frames whose parameters are not listed in the <br />provided table have not been tested for compatibility. <br />Tech Brief <br />A <br />B <br />2606 S. Pacific <br />Ave.07/01/22