Quick zone check

One fixture, one answer.

Measure from the tub or shower to the part of the fixture closest to it, and from the floor to its lowest point. The site does not save what you enter here (it travels in the page address, which web server logs record).

The fixture What is it?

Location marking (wired-in lights)On the label, box or spec sheet: "suitable for wet locations" or "damp locations".

GFCI-protected? (receptacles)

Where it goes The tub or shower

Distance from its outside edge (in)Measured level, to the nearest part of the fixture.

Height of its lowest point (in)From the finished floor.

Tub rim or shower threshold height (in)A standard tub rim is about 14 to 20 in; a curbless shower is 0.

It is directly over, or inside, the tub or shower A wall, door, window or fixed barrier separates it from the tub or shower Takes a receptacle out of the zone (2023 edition). For a light it means "ask your inspector". Never counts over or inside the tub or shower.