What is a roof mounted photovoltaic system guidance?

The guidance refers only to the mechanical installation of roof mounted integrated and stand-off photovoltaic systems; it provides best practice guidance on installation requirements and does not constitute fixing instructions.

What is the clamp size for a PV module?

For framed PV module, the clamp must overlap the module frame at least 8 mm (0.32 inch) but no more than 11 mm (0.43 inch). The cross section of clamp can be adjusted if the module is securely fastened. For frameless PV module, the clamp must overlap the module frame at maximum 15 mm (0.59 inch).

How do I mount a PV module to a substructure?

MOUNTING INSTRUCTIONS PV modules can be mounted to the substructure using either corrosion-proof M8 bolts placed through the mounting holes on the rear of the module or specially designed module clamps. A clearance of at least 115mm(4.5in) (recommended) is provided between modules frame and the surface of the wall or roof.

How to ground a SUNTECH PV module?

The material and size of the ground cable should meet the requirements of the local national, regional or international regulations, laws and standards. 4 to 14 mm2 (AWG6-12) exposed copper cable is recommended. Suntech PV modules can be grounded using a third-party grounding device, but the grounding must be proven reliable.

Can a photovoltaic system be installed on a ul2703 certified roof?

A photovoltaic system composed of UL1703 certified modules mounted on a UL2703 certified mounting system should be evaluated in combination with roof coverings in accordance with UL1703 standard, with respect to meeting the same fire classification as the roof assembly.

What happens if a PV module reaches 30 volts?

Any contact of 30 V or larger DC Voltage can be fatal. In case of no connected load or external circuits, modules can still produce voltage. Please use insulation tools and wear rubber gloves when operating modules in the sunlight. No switch is on the PV modules.