Mike Dolt Enterprises
Mike Dolt Enterprises
User: pete m., Location: Ohio
Asked on: Thursday, April 21, 2011 at 4:57 pm EDT
Answered on: Tuesday, May 14, 2024 at 4:29 am EDT
Question: Looking for opinions...I was presented with an interesting design for an installation today (it seemed interesting to me because I have never seen it done).Existing gasoline dispensers, existing conduits but the building will be razed and moved approx. 40 feet. The designer is proposing to install a hand hole large enough to intercept the existing conduits from the dispensers and route new conduits to the building.Would it be a violation of the NEC to thread the ends of the existing rigid conduit inside the hand-hole, install horizontal seals and splice to the branch circuits from the re-located building?The hand-hole would be located outside of the defined hazardous areas.Pete
Opinions
Yes, it could be a violation
NEC 501.4(B) prohibits splices in hazardous (classified) locations unless specifically permitted. A hand-hole, even if located outside hazardous areas, could still provide a path for flammable vapors to reach the splices.
No, it is not a violation
The NEC does not specifically address splicing in hand-holes located outside hazardous areas. As long as the hand-hole is properly sealed and maintained, it can provide a safe location for splices.
Additional Considerations
Accessibility
Hand-holes should be easily accessible for inspection and maintenance.
Sealing
Seals must be carefully installed and maintained to ensure they remain effective.
Ventilation
The hand-hole may need to be ventilated to prevent the accumulation of flammable vapors.
Emergency Response
Firefighters and other emergency responders should be aware of the location of the hand-hole and any potential hazards.
Recommendation:
To determine if this design violates the NEC, consult with a qualified electrical engineer or the local electrical inspector. They can evaluate the specific conditions of the installation and provide a professional opinion. Flag for review