Trina Solar TSM-DE21 - Page 16

Date: April 14, 2020 Doc No: PS-M-0871 Ver: B Page 16 of 21
washer and wire
 Electrical contact is made by penetrating the anodized coating of the aluminum frame, and
tightening the mounting screw (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.
Star washer, flat washer, grounding wire are
placed in turn, then screwed into the grounding
hole to bond the adjacent modules
 Trina recommends using the following methods to ground modules properly under UL
investigation
Method 1: Tyco grounding bolt # 2058729-1:
Figure 4. Tyco grounding bolt # 2058729-1
1) Wire bolt and slot 2) Mounting wash hex nut 3) Aluminum frame 4) 0.006 to 0.025in2 cable 5) Hex Nut
 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.
Method 2: Tyco grounding bolt #1954381-2:
Figure 5. Tyco grounding bolt # 1954381-2 (NOT applicable for TRINAMOUNT module
series)
1) Wire slot (available for 0.006 to 0.025in
2
cable) 2) Slider 3) Bolt 4) Base 5) Nut