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.

Are all PV products covered by IEC61730 'photovoltaic (PV) module safety qualification?

In future it is expected that all PV products will increasingly be covered by International standard IEC61730: 2004 ‘Photovoltaic (PV) module safety qualification’.

Are there any UK standards relating to a PV installation?

While many UK standards apply in general terms, at the time of writing there is still relatively little which specifically relates to a PV installation. However, there are two documents which specifically relate to the installation of these systems that are of particular relevance:

What is the maximum voltage a photovoltaic module can run?

For roof use, the maximum system voltage must not exceed 600V according to National Electrical Code. Under normal conditions, a photovoltaic module is likely to experience conditions that produce more current and/or voltage than reported at standard test conditions.

Can a racking system be used to ground a PV module?

This racking system may be used to ground and/or mount a PV module complying with UL 1703 only when the specic module has been evaluated for grounding and/or mounting in compliance with the included instructions. The system is a non-separately derived system.

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.