Clenergy PV-ezRack Grounding system Technical manual

Grounding System
Code-Compliant Planning and Installation Guide V 1.1
Complying with AS/NZS1170.2-2011 AMDT 2-2016
Last Updated - Apr. 2022

Installation Guide / Grounding System
1Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
The Clenergy PV-ezRack® Grounding system provides
important guide for installers to achieve earthing
continuity from PV modules to earthing cable. It
includes two important parts: grounding clips layout
design and grounding lug installation.
Please review this manual thoroughly before installing
PV-ezRack® Grounding system.
The PV-ezRack® Grounding system parts, when installed
in accordance with this guide, will be structurally
sound and will meet the AS/NZS1170.2:2011 Amdt
2- 2016 standard. During installation, and especially
when working on the roof, please comply with the
appropriate Occupational Health and Safety regulations.
Please also pay attention to any other relevant State or
Federal regulations. Please check that you are using the
latest version of the Installation Manual, which you can
do by contacting Clenergy Australia via email on tech@
clenergy.com.au, or contacting your local distributor in
Australia.
Product Warranty:
Please refer PV-ezRack® Product Warranty on our
website.
Introduction
Complying with all applicable local or national
building codes, including any that may supersede this
manual;
Ensuring that PV-ezRack and other products are
appropriate for the particular installation and the
installation environment;
Using only PV-ezRack parts and installer-supplied
parts as specified by the PV-ezRack project plan.
(substitution of parts may void the warranty and
invalidate the letter of certification);
Recycling: Recycle: according to the local relative
statute.
Removal: Reverse installation process.
Ensuring that there are no less than two professionals
working on panel installation;
Ensuring the installation of related electrical
equipment is performed by licenced electricians;
Ensuring safe installation of all electrical aspects of
the PV array, this includes adequate earth bonding of
the PV array and PV-ezRack® SolarRoof components
as required in AS/NZS 5033: 2021;
Verifying the compatibility of the installation
considering preventing electrochemical corrosion
between dissimilar metals. This may occur between
structures, fasteners and PV modules, as detailed in
AS/NZS 5033: 2021.
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The installer is solely responsible for:
List of contents
Introduction
Tools & Component list
Installation Instructions
01
02
03 -07
- Introduction -

Installation Guide / Grounding System
2
Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
Tools and Components
Tools
Screw Driver
with 6 mm Hex
Head drive bit
Torque SpannerTape String &
Marker Pen
Spanner
- Tools and Components -
Components
ER-EC-ST
Standard End Clamp
ER-IC-ST
Standard Inter Clamp
C-U/30/46-G
Universal Clamp
with Grounding clip
C-U/30/46
Universal Clamp
ER-EC-DU35/40
End Clamp,
Dual 35 or 40mm
ER-EC-DU40/46
End Clamp,
Dual 40 or 46mm
EZ-GL-ST/UC
Grounding lug with
U-shape copper channel
EZ-GC-ST
Grounding Clip

Installation Guide / Grounding System
3Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
Installation Instructions
PV Module Clamps Installation
The guide below is for PV module clamps installation. For PV Module installation, please follow manual provided by the
manufacturer.
Before module and clamps installation, it is important to arrange how to position grounding clips to achieve earthing
continuity between each PV modules and rails. The Clenergy recommends three different methods for Grounding
Clips Layout Arrangement.
- Installation Instructions -
Figure 1
Figure 3 “Zig Zag” Grounding Clips Layout
Figure 2
Figure 4 “All Inter Clamps” Grounding Clips Layout
Method 1: “Even and Odd”
• When there is an even number of PV Modules in each
row, install the grounding clips at the positions marked X in
Figure 1, where the number of Grounding Clips = number
of PV Modules. Figure shows 4 x PV Modules requiring 4 x
grounding clips.
• When there is an odd number of PV Modules in each
row, install grounding clips at positions marked X in Figure
2, where the number of Grounding Clips = number of PV
Modules + 1. Figure shows 5 x PV Modules requiring 6 x
grounding clips.
Method 2: “Zig Zag”
Install the grounding clips at the positions marked X in
Figure 3, where the number of Grounding Clips = number
of PV Modules + 1. Figure shows 5 x PV Modules requiring 6
x grounding clips.
Notes:
• Please consult local PV Module supplier to check whether
“Zig Zag” grounding clips layout has any effect on PV
modules.
• Grounding clips are not suitable for Dual End Clamp.
Method 3: “All Inter Clamps”
Install the grounding clips at the positions marked X in
Figure 4, where the number of Grounding Clips = (number
of PV Modules -1) x 2. Figure shows 5 x PV Modules
requiring 8 x grounding clips.

Installation Guide / Grounding System
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Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
Important Notes for any of method above:
• When replacing defective PV Modules, it is required to replace the grounding clips under the defective PV Modules;
• When removing defective PV Modules, it is required to keep sufficient grounding clips to maintain all other PV
modules’ earthing continuity with the rail. It is required to install grounding clips under end clamps when necessary to
achieve this;
• For array requiring more than 2 rows of rails, the layout and quantity of grounding clips are the same as those for 2
rows of rails.
There are two types of clamps for PV Modules Installation.
Option 1: Standard Inter and End Clamps
Place the first PV Module on the Rail according to your plan,
and fix it in place using the End Clamps. Then fasten lightly as
shown in Figure 5. If arranging grounding clips using “Zig Zag”
layout method above, a grounding clip needs to be installed
under an end clamp as shown in Figure 6.
- Installation Instructions -
Figure 5
Figure 6
Figure 7
Figure 8
Slightly lift the PV Module and slide Inter Clamps and
Grounding Clips into position. The teeth on Grounding Clip will
automatically align when the Inter Clamp is properly installed as
shown in Figure 7.
Loosely place the next framed PV Module into the other side of
the Inter Clamp and Grounding Clip as shown in Figure 8.

Installation Guide / Grounding System
5Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016 - Installation Instructions -
Option 2: Universal Clamps
Turning the top plate of the Universal Clamp to switch the
functionality between End and Inter Clamp as shown in Figure 9.
Note: Universal Clamp with part number of C-U/30/46 has no
pre-fitted grounding clip and Universal Clamp with part number
of C-U/30/46-G has pre-fitted grounding clip. Please use one of
grounding clips layout arrangement methods above to position
them correctly.
Important Notes:
• To fix the Grounding Clip properly, ensure the frames of PV Modules are completely pressed against End and Inter
Clamps and Grounding Clips. Visually check that Grounding Clips are positioned properly;
• Grounding Clips are intended for SINGLE USE ONLY! Only fasten the bolts down with recommended torque of 16~20
N·m when the position of the PV Module is finalized. (Only slightly tighten bolts to keep PV Modules in place prior to
the final check).
Figure 9
Figure 10
Figure 11
Incline the Universal Clamp to fit the lower channel of clamp against
the lower rib of the Rail and press module of the Universal Clamp to
click in the rail channel. Please make sure the upper channel of clamp
fits against the upper rib of rail as shown in Figure 10.
Note: Before clicking in, make sure there is enough room between
two “claws” of the module otherwise it needs to screw up the bolt
as shown in Figure 11.

Installation Guide / Grounding System
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Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
Place the first PV Module on the Rails and apply the Universal Clamp as the End Clamp and fasten slightly. Make sure
the frame of the PV Module is fully in contact with the Universal Clamp as shown in Figures 12 and 13. Visually check
the Universal Clamp and PV module are properly installed.
When using as an Inter Clamp, click the Universal Clamp into the rail
channel and slightly lift the framed PV Module to ensure the Grounding
Clip is properly positioned as shown in Figure 14.
Note: The gap between two adjacent PV Modules generated by universal clamp is 20mm. The recommend torque
for Universal Clamp as End Clamp is 13~14 N·m. The recommend torque for Universal Clamps as Inter Clamp is 16~20
- Installation Instructions -
Figure 12 Figure 13
Figure 14
Loosely place the next framed PV Module into the other side of the Universal Clamp. Ensure the Grounding Clip is
properly positioned, and the frame of the PV Module is in proper contact with Universal Clamp as shown in Figures 15
and 16.
Figure 15 Figure 16
20mm

Installation Guide / Grounding System
7Code-Compliant Planning and Installation Guide V 1.1 - Complying with AS/NZS1170.2-2011 AMDT 2-2016
It is required to install one Grounding Lug per row of rail. The recommended fasten torque of the bolt M8*25 is
16~20 N·m.
Grounding Lug Installation
- Installation Instructions -
Figure 17
Figure 18
Figure 19
Once grounding lug fixing with rail, insert U-Shape Copper Channel into
grounding lug as shown in Figure 17. Strip earthing cable (the maximum size is
10 mm2), insert the conductor into the Copper Channel and tighten the bolt
M6*14 with 5~6 N·m to ensure the earthing cable is tight.
Note: Please check the electrical resistance between rail and earthing cable
conductor to ensure the bonding is made.
There are three options for Grounding Lug installation.
Option 1
Fix the Grounding Lug into the top channel of Rail as shown in Figure 18.
Option 2
Fix the Grounding Lug into the top channel of Rail where just under the PV
Module as shown in Figure 19. Total height of grounding lug allows installation
under 30 mm high PV module.
Option 3
Fix the Grounding Lug at the side channel of Rail as shown in Figure 20.
Figure 20

Clenergy
1/10 Duerdin St
Clayton VIC 2168
Australia
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Web: www.clenergy.com.au
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