9910045 RevF
October
2020
Electrical Grounding
Please consult with national and local building code(s) for
complete grounding requirements for your installation. The
clawFR grounding method conforms to ANSI/UL 2703 and is
certified by SolarPTL for use with approved photovoltaic
modules listed under ANSI/UL 1703 and/or ANSI/UL 61730.
Installers can quickly and easily establish ANSI/UL 2703
certified electric bonds between all connected array
components, including modules and mounting system
components, without the use of additional grounding
devices, e.g. ground lugs and copper wire. At least one
ground lug must be used to ground all strings within a
physical sub-array provided the fuse rating for each string
does not exceed 30 amps. Installers may opt to use multiple
lugs per sub-array for redundancy. When grounding devices
are installed according with the approved methodology and
capacity below, the connections described above meet all
the requirements outlined in NEC 690.43.
Grounding Instructions
For modules that have been evaluated for use with clawFR 10 Degree,
please follow the instructions below in
Appendix B: UL 2703 Grounding
.
Additional information regarding ANSI/UL 2703 and the specific list of
evaluated modules included in
PanelClaw’s
UL listing can be found in
the
“clawFR
UL Overview and Module
Listing”
document (available at
).
For modules that have not been evaluated for use with clawFR, please
follow the instructions below in
Appendix D: Electrical Grounding (Non
2703 PV Module)
.
ALERT:
During grounding and bonding ensure there is separation
between bare copper and aluminum or ZAM coated steel components.
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