ryan_618
Senior Member
- Location
- Salt Lake City, Utah
For a product (J-box)to be identified (or listed) as suitable for group E locations (Class II), does the enclosure need to be dust-ignition proof, or just dust tight?
There are rules that govern sealing if the box is required to be dust-ignition proof. So, if I am working in a group E class I division I location, I must seal if the box (for splices only) is required to be dust-ignition proof. If the box is only required to be dusttight, I wouldn't have to seal. I need to know what the the listing difference is between a group "E" and groups "F" and "G". Does that make any sense?502.10 Wiring Methods.
Wiring methods shall comply with 502.10(A) or 502.10(B).
(A) Class II, Division 1.
(4) Fittings and boxes shall be provided with threaded bosses for connection to conduit or cable terminations and shall be dusttight. Fittings and boxes in which taps, joints, or terminal connections are made, or that are used in Group E locations, shall be identified for Class II locations.