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Wiley Electronics is the creator of the well known bonding washers WEEB. WEEB stands for "washer, electrical equipment bonding". WEEB products are used to bond solar modules to aluminum racking and mounting rails. The solar modules and the racking system are then grounded, grounding and interconnecting the entire assembly into one single grounding system. The use of WEEBs eliminates the need to use a lay-in lug and/or a thread-forming screw on each module. The use of WEEBs also eliminates the need to run a continuous wire to each module. Wire is only needed to connect a lay-in lug on each mounting rail to an equipment grounding terminal in the inverter or disconnect.
It has been continuously proven that WEEBs save installers time and money. WEEB products are ETL listed to UL standards. WEEB products meet the requirements of UL 467.
The WEEB-9.5 is used for bonding modules to mounting structures when the modules are directly bolted to the rails using 1/4" bolts through the mounting holes on the rear of the module frames. This type of mounting is typical on DPW ground and pole mount systems and on Wattsun and Zomeworks trackers (Mounting Structures section). The WEEB-9.5NL is used for bonding strong-back structure and legs to the rail where 3/8" bolts are used.
We advise speaking to your building inspector before installing WEEB products to see if they are acceptable in your area.