INSTALLATION GUIDE
PAGE
HIGH DENSITY 5-DEGREE
BALLAST RACKING SYSTEM
22
GROUNDING AND BONDING
The EcoFoot5D system has been tested by SolarPTL and conforms to UL 2703 for Grounding and Bonding when installed per the published installation instructions.
EcoFoot5D carries module-to-module ground bond through the Wind Defl ector and Mid-Support.
Each row of modules/wind defl ectors in an array of up to 400 modules must be grounded per the NEC and ANSI/NFPA 70 either through the designated ground hole in
the Wind Defl ector, or by drilling a ¼” ground hole into the Wind Defl ector a minimum of ½” from any edge. One Ground Lug is required for every 400 modules connected
within an array.
Unirac recommends using #6 copper ground wire in conjunction with WEEB grounding devices such as the WEEB-LUG-6.7 or WEEB DSK516.
Lugs are a single use components.
Other grounding methods must be reviewed and approved by a licensed master electrician or electrical engineer and Authority Having Jurisdiction (AHJ).
Ground Hole with Lug Installed
Ground Lug is installed in the Wind Defl ector either in the designated
ground hole or by drilling a ¼” ground hole into the Wind Defl ector a
minimum of ½” from any edge. One Ground Lug is required for every 400
modules within an array.
Green lines represent ground bond path.
Wind Defl ectors carry module-to-module east/west ground bond. Mid-Supports
carry row-to-row north/south ground bond.
Grounding and Bonding Path
Ground Lug
Ground Lug
