I just finished a small pump station with a package pump unit contained in a concrete block building. A 225 amp service, 3 convenience receptacles, 2 lights, and one 240 volt simplex receptacle for a plug in heater. There were no plans or specs. I protected all the 120 volt receptacles with GFCI receptacles. The inspector told me he considered the building a wet location, and required a ground fault breaker for the dedicated 240 volt simplex receptacle for the heater. Was he correct? I am never against personnel safety, but I am not sure he is correct. I did install the breaker to get the job completed, but I would like to know for my own curiosity. Thanks.
Ground fault protection
- Thread starter Diver94
- Start date
- Location
- New Jersey
- Occupation
- Journeyman Electrician
What code cycles are you on? The 2020 added damp locations to the list of required areas for GFCI protection. Here's the definition from Article 100 does it fit your location?
The location of this installation is in a concrete block building built on a concrete slab. The outlet serving the heater was 4 feet above the slab. The conduit never went "into" the slab or block wall.
rc/retired
Senior Member
- Location
- Bellvue, Colorado
- Occupation
- Master Electrician/Inspector retired
I wouldn't call the inside of the building a wet location. With that, what code cycle are you under?
Ron
Ron
I don't see it as being much different than a detached garage or basement or damp area -- the concrete floor being the main driver. 210.8(B) requires GFCI receptacles up to 250V and 50A (100A if 3 phase) for indoor damp or wet locations; garages, accessory buildings, service bays, and similar areas; unfinished areas of basements.