Solar Builder

MAY-JUN 2018

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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SOLARBUILDERMAG.COM | 47 Look to kits Consider systems where only a single tool is required for installation. Take Unirac's SunFrame Microrail or the new Pro Series SM for example. Parts come pre-assem- bled out of the box making for a quick and easy install on the roof. There is no need to fumble with loose parts and pieces. Parts can be pulled from the box and can be put straight to use. "One tool installation saves time on the roof, eliminat- ing the chance of dropping tools while changing sockets," says Anthony Romero, lead trainer for Unirac. The SM Pro Series features module agnostic mid and end clamps. The end clamps secure the module while staying beneath the module. Arrays look very clean and appealing without any rail or hardware protruding. The mid clamps come pre-assembled and are self-standing. They also come coated with anti-seize to prevent galling and breaking stainless steel bolts. Unirac's FlashKit Pro comes in a pack of 10 with flashing, L-Feet, T-bolts and lag bolts in one convenient box. Having everything in one package helps cut down on the amount of packaging needed on the roof. They are the easiest flashing kit to count, kit and carry to the roof. Pre-assembly As a best practice, Jason Xie, president of Magerack, recommends assembling components on the ground as much as possible and avoiding assembling tiny components such as rubber washers on the roof. For example, Magerack solar mounting components don't contain any rubber components and all components are pre-assembled out of box. Magerack roof attachment doesn't need any rubber washer and has no tiny components except pre-assembled fasteners. The two major compo- nents of MageMount MageMount II Rail-less Solar Mounting System, module connector and module brackets, can be assembled to the solar module on the ground before moving them on the roof. Module connec- tors are used to connect and secure two adjacent solar modules along the same row or between two rows. Those connectors and the roof attach- ments can be attached anywhere along the module edge where they are needed the most. SKU reduction The SunRunner 4 clip from Heyco was developed to reduce the number of SKUs for an installer. For those using a mix of SolarEdge and Enphase, this clip will handle both types of cable. The SunRunner 4 clips directly onto the PV module frame and holds up to four SolarEdge cables or up to three Enphase Q cables com- fortably. The SunRunner 4 takes the guesswork out of ordering the correct clip as it holds both types of cable. Heyco also manufactures top rail clips with the exact same clip design as its SunRunner 4 for top racking manufacturers like Unirac, IronRidge, and Everest. This universal design allows the clips to be used on a wider range of installations and reduce the number of SKUs (and headaches) for installers. Heyco also offers a series of nylon UVX clips which qualify for its 20-year war- ranty and are generally 20 percent less expensive than their stainless steel equivalents.

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