Installation Guide

MODULE INSTALLATION AND USER MANUAL – PERC AND MONO SERIES
REVISION DATE:
06/19/2017
DOCUMENT #
GE- SA1- 0006
PAGE:
11 OF 14
MISSION SOLAR ENERGY - MSE CONTROLLED- PROPRIETARY & CONFIDENTIAL - RELEASED
Reproduction, dissemination, copying, modification, distribution and/or publication of this material is STRICTLY PROHIBITED. Disclosure of this document,
in any manner to a third party, requires prior written consent from MISSION SOLAR ENERGY LLC.
REVISION: R4 RELEASE DATE: 11/16/2016
10.0 GROUNDING INSTRUCTIONS
A module with exposed conductive parts is considered to be in compliance with UL 1703 and IEC 61730 only
when it is electrically grounded in accordance with the instructions presented below and the requirements of
the National Electric Code. To reduce the possibility of electrical shock, ground the frame of the module or
array before wiring the circuit using a grounding method that meets NEC requirements for grounding solar
electrical systems. In order to install, Mission Solar Energy modules shall be grounded using grounding
hardware that has been certified to meet requirements for grounding systems in UL467, UL1703, or UL1741
on anodized aluminum frames. Mission Solar Energy recommends one of the following methods of grounding
the module frame. Where common grounding hardware (nuts, bolts, star washers, spilt-ring lock washers, flat
washers and the like) is used to attach a listed grounding/bonding device, the attachment must be made in
conformance with the grounding device manufacturer’s instructions.
Common hardware items such as nuts, bolts, star, washers, lock washers and the like have not been evaluated
for electrical conductivity or for use as grounding devices and should be used only for maintaining mechanical
connections and holding electrical grounding devices in the proper position for electrical conductivity. Such
devices, where supplied with the module and evaluated through the requirements in UL 1703, may be used for
grounding connections in accordance with the instructions provided with the module.
In addition to the grounding and/or mounting methods included in these instructions, this module may be
grounded and/or mounted using the instructions provided with a racking system in compliance with UL Outline
(Standard) 2703 where this module has been evaluated with that racking system.
10.1. WEEB-UIR
The WEEB washer family of products can be used to bond anodized aluminum, galvanized steel, steel
and other electrically conductive metal structures. All installations shall be in accordance with NEC
requirements in the USA and with CSA C22.1 in Canada. The WEEB washers are for use with modules
that have a maximum fuse rating of less than 25A. Use WEEB-UIR to bond solar modules to module
mounting purlin and torque fasteners to 7ft-lb / 9.5N-m use Penetrox-A on threads. The following UL
Recognized component, Bonding Washer, manufactured by BURNDY LLC (E351343) in combination
with the following model number PV module(s), used with a flat washer, a 6-32 inch size nut and bolt
(see Figure 6 for details).
FIGURE 6: GROUNDING USING WEEB-UIR