Class A Fire Rated Solar Panels

A properly designed and installed solar panel system with correctly operating equipment presents no fire hazard to your home.

Class a fire rated solar panels.

We are writing to address several statements in the recent solar power world article titled new class a fire regulations closer than you think published aug. In laboratory based fire tests of roof assemblies 1 2 the maximum allowable fire spread is between approximately 20 and 40 ft 2 1 9 and 3 7 m 2 depending on whether an a b or c rating is desired. This is what some authorities having jurisdiction ahj have done. Are to be performed for the fire resistance qualification of pv modules in the roof area.

How do solar panels catch on fire. In the absence of a fire rating for pv systems it may seem appropriate to use the fire rating of the pv modules in order to ensure the desired result of retaining the roof assembly s original fire classification. Specifically this requires the modules mounting hardware and roof covering to be tested together as. In particular these tests were initiated in response to questions from stakeholders about the language in the ul guide card that stated that pv modules.

Recently these fire resistance standards were expanded to include solar equipment as part of the roof system. Required tests for system fire class rating of pv module or panel with mounting system in combination with roof coverings table 31 2 test tests over representative roof coverings class aclass bclass c spread of flame on top surface of module or panel section 31 1 2 a flame spread less than. Where is a class a fire rating required. The pv modules are rated in classes a b or c whereby class c comprises the minimum requirements.

The general requirement for roofing systems in the ibc refers to a class c fire rating. 19 2014 that we believe are inaccurate. Ul 1703 fire classification requirements. Class a fire rating background all roofing products are tested and classified for their ability to resist fire.

Solar abcs research investigates whether and how the presence of stand off mounted pv arrays may affect the fire class rating of common roof covering materials. Class a or b is required for areas such as wildland urban interface areas wui and very high fire severity areas. Some solar panels for example include a backing of highly combustible plastic. Just like the 44 000 electrical fires that happen every year a solar panel fire is the result of a malfunction.

In the article the author states that racking systems from solardock and solar panels. Several people involved in the creation of the new fire regulations respond to this article. For this purpose both roof integrated pv modules and also modules for roof parallel installation are subjected to flame treatment from the upper surface.