Installed photovoltaic panel blocks

How does a photovoltaic system work?

The heart of a photovoltaic system is the solar module. Many photovoltaic cells are wired together by the manufacturer to produce a solar module. When installed at a site, solar modules are wired together in series to form strings. Strings of modules are connected in parallel to form an array.

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 solar panels work on a flat roof?

The solar panels are attached to a solar racking system. That racking system has trays below the panels on which heavy concrete blocks will be placed. The weight of these blocks keeps the solar panels in place on flat roofs. While the system will sit on a flat roof, the solar panels themselves will be installed at an angle in most cases.

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.

How do I install a roof-mounted solar system?

A roof-mounted solar system requires either being tied into the roof itself or weighed down with concrete. If you have a flat roof or a very small pitch then it’s likely you will need to do a “roof ballast mount” for your panels. In the racking system there are trays below the panels which allow you to put heavy concrete blocks.

What type of mounting structure is used for PV panels?

This mounting structure is often used for residential systems. Helical piles. In sites with weak granular soils, helical piles are driven deep into the ground and attached to the PV panels. They can withstand uplift forces caused by the soil expanding or by strong winds as the helixes in the poles keep them fixed in place.