Installation Guide

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Safety and Installation instructions

Document SPS-1006 Rev 02, April 25, 2017

3.1 Grounding (Grid-tied applications)

 Before installing your solar system, contact local authorities to determine

the necessary system hardware grounding requirements.

 Module frames should be electrically connected to an earth ground for

safety and protection from lightning in accordance to the National Electric

Code (NEC). Refer to NEC article 250 on grounding PV arrays for specific

requirements.

 Solaria PowerXT residential solar modules may be installed on a mounting

system certified to UL 2703 with approval of the mounting system

manufacturer.

 When using a mounting system, grounding of modules must be

accomplished by the method prescribed by the mounting system

manufacturer.

 Where common grounding hardware (nuts, bolts, star washers, split-ring

lock washers, flat washers and the like) are used to attach the solar

module to 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 UL1703, may be used for grounding

connections in accordance with the instructions provided with the

module.

 Follow these instructions to ground the module.

 The module frame has four 4.5 mm grounding holes shown on the

module label. Attach a 10 AWG (2.588 mm diameter) bare copper

ground conductor to a grounding lay-in lug mounted at one of the

four grounding holes on the module frame. Use a grounding lug

such as the ILSCO GBL-4DB with tin plating and stainless steel