UNIRAC EcoFoot2+ - Grounding and Bonding Paths; Ground Hole and Lug Installation

INSTALLATION GUIDE
PAGE
22
10-DEGREE BALLASTED RACKING SYSTEM
The EcoFoot2+
TM
system has been tested by SolarPTL and conforms to UL 2703 for Grounding and Bonding when installed per the published installation
instructions.
EcoFoot2+ carries module-to-module ground bond through the Wind Deector, Item E listed in the “System Components Section” in this document.
Each row of modules/wind de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 Deector, or by drilling a ¼” ground hole into the Wind De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
component.
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
Wind Deectors carry module-to-module East/West ground bond. Bonding jumpers carry
row-to-row North/South ground bond.
Ground Lug
Ground Lug
JUMPER
Fault Current
Ground Path
GROUNDING AND BONDING PATHS