When using a 1/2" deep pancake box, with a volume of 8", this volume is considered with a cover on the box, correct? If using one to install a ceiling fan, or any other fixture that does not have a plate that sits right on the fixture, is additional volume provided by the fixture?
I dont' think 370-16(a) applies because fixtures are not marked with volumes, but I'm also looking at 410-10.
