The regulations for the installation of solar panels is set by individual states. The federal government, however, provides tax credits to homeowners who install solar panels that generate electricity for residents and meets electrical codes and local fire. While the codes may vary by jurisdiction, most of localities using electrical standards and fire set by the National Association of Protection against Fire and other public guidelines, which are a good indication of what will be the most basic needs.
The roof loads
Solar panels will add at least three pounds (1.36 kg) weight on the roof per foot square (0,093 m²) of collection area, according to a 2009 report published by the National Renewable Energy Laboratory. Increasing the load it can be aggravated by accumulations of snow, water runoff, wind and other natural factors. The report recommends calculating the weight your roof can support using the guidelines of building codes of the American Society of Civil Engineers. These calculations must be confirmed by the local building official before installing the system.
According to the National Renewable Energy Laboratory, some local fire codes will not allow solar panels mounted on the roof to be installed at the edges of it, leaving enough to access the system securely from all sides to make repairs space. The modules mounted flat on the floor frames they may also be surrounded by a protective fence. Some local ordinances also need lightning protection panels.
Other considerations fire code
A working group of the State of California, in collaboration with experts from the solar industry, created guidelines in 2007 for local governments continue to set fire codes for solar panel installations. These guidelines include a clear indication of all components of the solar system, providing space for smoke ventilation between the panels installed on the roof and planning routes between panels along the horizontal and vertical axes thereof. The guidelines also include specifications for the installation of electrical components of the panels, including the installation of wiring and as close as possible raceways beams, ridge or roof valley and system design to minimize the total amount ceiling duct.
The National Electrical Code has a specific section designated for the installation of solar panels, which should, in addition to the electrical codes of each state follow. The requirements are plentiful, and there are several publications devoted simply to the interpretation of them. A Guide 2008 for the code says that common violations include: using the wrong types of drivers, using insecure connection methods not installed or installed improperly overcurrent protection for drivers, not having enough disconnections not have enough protection for short circuit or overload current in the circuit of the battery, the use of components not listed when the components listed are available and improper grounding equipment.