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.

Should a general contractor install a solar PV system?

A general contractor may face a choice between using an electrical subcontractor or a solar subcontractor to install the PV system. A good solar contractor will have the expertise in solar PV systems plus qualified electricians on staff.

How do I design a photovoltaic and solar hot water system?

Provide an architectural drawing and riser diagram for the homeowner showing the planned location for future photovoltaic and solar hot water system components. Space requirements and layout for photovoltaic and solar water heating system components should be taken into account early in the design process.

What is a mains-connected PV installation?

A mains-connected PV installation generates electricity synchronised with the electricity supply. Installers are obliged to liase with the relevant Distribution Network Operator (DNO) in the following manner: 30 days. Multiple installation covered by G83/1 – application to proceed (G83/1 appendix 2).

What is a grid-connected PV system?

AC Power Output – Grid-connected systems are sized according to the power output of the PV array, rather than the load requirements of the building. This is because any power requirements above what a grid-connected PV system can provide is automatically drawn from the grid.

How do I choose a DC cable for a grid-connected PV system?

The cables used for wiring the d.c. section of a grid-connected PV system need to be selected to ensure that they can withstand the environmental, voltage and current conditions at which they may be expected to operate. This will include heating effects of both current and solar gain.