California recently adopted a new code requirement that all PV modules be given the same class rating (A, B, or C) as the roof upon which they are to be installed. A Class A roof has to have a Class A PV module. While the new 1703 will allow for Class C modules to be rated as Class A when installed in specific configurations on specific roof types, or with specific modifications, the old 1703 requires the testing and rating only of the module itself.
This change in state building code is dependent on an updated UL 1703 testing procedure that will test the whole solar PV configuration (racking and module) and give the whole system a Class A, B or C rating. As such, Class C modules could, if installed properly, qualify as Class A system for fire-prone regions.
While this change in code is not controversial in and of itself, the fact of the matter is, the code took effect before UL, or any other lab, has had a chance to test and certify many, if any, PV modules under the new standard, which includes testing of modules and roofing as a system.
Join this webinar to learn more about these new changes, where they are taking effect, and what lies ahead in terms of providing alternative compliance options until proper testing can be done. Experts from Solar ABC’s will explain exactly how these regulations will affect the solar industry and how a Class C module can receive a Class A rating under the new UL 1703 test.
- Bill Brooks, President, Brooks Engineering
- Larry Sherwood, Vice President and COO, Interstate Renewable Energy Council
- Chris Flückiger, UL
- Bernadette Del Chiaro, Executive Director, CALSEIA