Table of Contents
Advertisement
7.
Grounding Method
For preventing electric shock and fire, the frame of PV module shall be grounded properly.
[Please be sure to remove a coated portion when grounding, because the PV module aluminum frame is coated with anodizing.]
·
The grounding clip assembly consists of a slider, base, and self–captivating thread–cutting screw or
nut. The grounding clip accepts solid uninsulated copper wire sizes 10 or 12 AWG.
1. Using a No. 21 drill bit, drill a (4.09–mm [.161–in.] diameter) hole in the frame.
2. Place the grounding clip onto the frame, making sure that the screw straddles the drilled hole.
Using a No. 2 cross–recessed screwdriver, thread the screw into the hole until the head is flush with
the base and the base is flush with the frame, then tighten the screw with another 1/4 to 1/2 turn.
Recommended torque is between 2.3 and 2.8 Nm [20 and 25 in.–lbs].
3. For the grounding clip with the 8–32 and hex nut, thread the hex nut onto the end of the screw,
then using a 3/8–in. wrench, tighten the nut.
4. Insert the wire into the wire slot. Press down on both ends of the wire (the wire slot will cause the
wire to form a slight curve).
5. Manually, or using channel lock pliers, push the slider over the base until it covers the base. This
will terminate the wire.
·
Where common grounding hardware (nuts, bolts, star washers, spilt-ring lockwashers, flat washers and the like) is used
to attach 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 UL 1703, may be used for grounding connections in accordance with the
instructions provided with the module.
＊Recommendation
8–32 screw and hex
S-Energy PV Module Installation Manual
06
Advertisement
Table of Contents
