[RE-wrenches] 2018 Residential Code Fire Setbacks

[rick at solshineenergy.com]

Wrenches,

Looking for some guidance on setbacks at ridge for PV systems. The 2018 code states the following:

R324.6.2 Setback at ridge.
For photovoltaic arrays occupying not more than 33 percent of the plan view total roof area, not less than an 18-inch (457 mm) clear setback is required on both sides of a horizontal ridge. For photovoltaic arrays occupying more than 33 percent of the plan view total roof area, not less than a 36-inch (914 mm) clear setback is required on both sides of a horizontal ridge.


In reading this  <https://ipsunsolar.com/new-fire-code-setbacks-in-virginia-will-limit-the-size-of-solar-projects/>article put out by Ipsun Solar regarding the setbacks, they state that if there’s no PV on the opposite side of the roof no setback is required, although their diagram shows a 12” setback. I don’t see any exceptions in the code that indicate that. What’re you all doing for ridge setbacks? 

Thanks,


rick brown
SolShine Energy Alternatives, LLC
Electrical & Solar Contracting Services
www.SolShineEnergy.com
Roanoke, VA
Office: 540.235.3095
Mobile: 540.808.9502

VA Class A Contractor Lic# 2705147660
VA Master Electrician Lic# 2710062762
VA Alternative Energy Systems Installer  
NABCEP Certified PV Installation Professional 110112-21



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