Date: April 14, 2020 Doc No: PS-M-0871 Ver: B Page 17 of 21
Tyco grounding hardware comes in a package that includes the grounding bolt, mounting and
grounding hex nut.
Electrical contact is made by penetrating the anodized coating of the aluminum frame, and
tightening the mounting hex nut (come with the star washer) to the proper torque of 25lbf.in.
Grounding wire size (6 to 12 AWG solid bare copper) should be selected and installed
underneath the wire binding bolt.
The wire binding bolt should be tightened to the proper torque of 45lbf.in.
The Tyco grounding bolt is only listed for use with 6 to 12 AWG bare solid copper wire.
Method 3: ERICO grounding bolt # EL6CS14-6
Figure 6. ERICO grounding bolt # EL6CS14-6 (NOT applicable for the TRINAMOUNT module
series)
1) Machine Bolt A 2) Machine Bolt B 3) Belleville washer 4) Flat Washer
5) Clearance hole for #10[M5] machine bolt 6) Aluminum frame
7) Machine box hex nut with lock washer 8) Grounding bolt
The lug should be installed on a surface that is larger than the bottom surface of the lug.
The lug should be installed in the grounding holes provided on the PV module.
Machine bolt A should be torqued to 35lbf.in, to secure the grounding bolt to module frame.
The grounding bolt is only listed for use with 6-12 AWG bare solid copper wire.
For proper wire binding, machine bolt B should be torqued to 35lbf.in.
7.2.3 ELECTRICAL INSTALLATION
All wiring should be performed, by qualified installers, in accordance with the local codes and
regulations.
Modules can be connected in series to increase the operating voltage by plugging the positive
plug of one module into the negative socket of the next. Before connecting modules always
ensure that the contacts are corrosion free, clean and dry.
Product can be irreparably damaged if an array string is connected in reverse polarity to
another. Always verify the voltage and polarity of each individual string before making a parallel
connection. If you measure a reversed polarity or a difference of more than 10V between
strings then check the string configuration before making the connection.
Trina Solar modules are provided with stranded copper cables with a cross sectional area of
4mm²(0.006in²) which are UV resistant. All other cables used to connect the DC system should
have a similar (or better) specification. Trina Solar recommends that all cables are run in
appropriate conduits and sited away from areas prone to water collection.
The maximum voltage of the system must be less than the maximum certified voltage and the
maximum input voltage of the inverter and of the other electrical devices installed in the system.
To ensure that this is the case, the open circuit voltage of the array string needs to be
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