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qualified system designer or integrator. Building permits, inspections and approvals by the local utility are generally required.
Especially for larger installations Suntech recommends lightning protection following the local requirements and
regulations.
When the installation finished and after connecting to the grid, please do a professional hand over to the owner including
an installation protocol is required. Provide a clear documentation of the system to the owner consisting of following minimum
data such as: user guide, system layout, data sheets, performance expectations, electrical system data e.g. a copy of the
installation test report following minimum requirements of IEC 62446 / IEC 60364-6.
Grounding
For grounding and bonding requirements, please refer to regional and national safety and electricity standards. If
grounding is required, use a recommended connector type for the grounding wire.
For grounding, this guide refers to module frame grounding. If grounding is required, make sure module frames (metal
exposed to touch) are always grounded.
Suntech recommends always refer to local state and national code requirements for PV module grounding. Suntech highly
recommends negative grounding if it's allowed by local authorities.
When attaching the frame grounding hardware and wire to the frame it must be placed corresponding to the ground
symbol stamped location to ensure proper electrical connection.
Suntech recommends one of the following parts for grounding:
1) Use M5 bolt and washer to bond the ground wire and aluminum frame through the grounding hole (as shown below).
The tightening torque is 3-7Nm. All nuts and washers should be made of stainless steel. 4-14 mm
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(AWG 6-12) exposed copper
wire recommended as ground wire.
2) Use WEEB-DPF to bond solar modules to module mounting brackets (grounding part is tested to UL467)
Notice that WEEB teeth is positioned completely under the edge of the module frame.
When position of solar module is finalized, torque fasteners to 20.5 N-m/15 ft-lb using general purpose anti-seize on threads.
For more information, please contact supplier: BURNDY, http://www.we-llc.com
3) Use Schletter clamps to bond solar module to module mounting brackets (grounding part is tested to UL467).
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