Do dormers always fall under the zone of protection provided by ridge air terminals?

Dormers are not always included under the zone of protection provided by ridge air terminals. The zone of protection depends on various factors, such as the height of the dormer in relation to the air terminals and the specific installation and design of the lightning protection system.

In many lightning protection schemes, the installation of air terminals (like those on ridges) provides a defined zone of protection that typically follows an angle from the terminal tip. If a dormer extends beyond this protection zone or is lower than the ridge terminal, it may not receive adequate protection.

Therefore, understanding the specific heights and angles involved in the lightning protection design is crucial, which makes the assertion that dormers are always included inaccurate. The correct interpretation acknowledges that in specific scenarios and installation types, dormers may indeed be protected, but it is contingent upon their positioning relative to the ridge air terminals.