Can a service to a fire pump be routed through a vault that contains the fire pump and controller?230.6(3) considers the conductors outside a building if installed in a vault.NEC 450.42 exception,states you only need 1 hour rating for vault walls,roof,and floors if sprinklered.In that case could the service conductors be routed from one side of the vault to the other side,about 30 feet away?
fire pump room
- Thread starter jtom
- Start date
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gadfly56
Senior Member
- Location
- New Jersey
- Occupation
- Professional Engineer, Fire & Life Safety
If you are penetrating from the outside into the vault, and the vault meets the requirements, and all the equipment is inside the vault, then normal wiring methods apply. Once you hit the vault, you don't need 2-hour construction.
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