Underground Electrical Duct Banks
Remake batch 26: rewritten from scratch under the authoring cheatsheet with datasheet constraints; neighbors re-pointed to the new scope boundaries; the electrical code is now the adopted-electrical-code project fact
Showing changes from Rev 4
to Rev 5
in Underground Electrical Duct Banks.
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title: Underground Electrical Duct Banks
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description: >
When to use: Concrete-encased and direct-buried conduit duct banks for site electrical and communications distribution between buildings, transformers, substations, switchgear, generators, and exterior equipment, including the raceway configuration, concrete encasement and reinforcement, cover and separation, manhole and handhole interfaces, building entries, and the proving of the installed system.
− Not intended for: Interior raceways and above-grade conduit (see [[sync/raceways-and-conduit]]); direct-buried cable installed without conduit; the conductors and cables pulled through the duct bank (see [[sync/conductors-and-cables]]); grounding and bonding of the duct bank and its structures (see [[sync/grounding-and-bonding]]); medium-voltage cable and termination specification (see [[sync/medium-voltage-cables]]); and hazardous (classified) locations, whose seals and entries are specified in [[sync/electrical-hazardous-locations]].
+ Not intended for: Interior raceways and above-grade conduit (see [[sync/raceways-and-conduit]]); direct-buried cable installed without conduit; the conductors and cables it carries (see [[sync/conductors-and-cables]], [[sync/distribution-feeder-cables]] for service and feeder conductors, and [[sync/medium-voltage-cables]]); grounding and bonding of the duct bank and its structures (see [[sync/grounding-and-bonding]]); medium-voltage cable and termination specification (see [[sync/medium-voltage-cables]]); and hazardous (classified) locations, whose seals and entries are specified in [[sync/electrical-hazardous-locations]].
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## The work includes the conduit, the concrete encasement and any reinforcing steel, the duct spacers, the excavation and bedding, the backfill, the cover and separation from grade and other utilities, the building and structure entries and their seals, the warning tape and marking, and the proving of every duct before cables are pulled. {note}
−## The duct bank establishes the buried raceway pathway; the conductors and cables installed within it are specified separately in [[sync/conductors-and-cables]]. {note}
+## The duct bank establishes the buried raceway pathway; the conductors and cables installed within it are specified separately in [[sync/conductors-and-cables]], [[sync/distribution-feeder-cables]], and [[sync/medium-voltage-cables]]. {note}
## The manholes, handholes, and pull boxes that interconnect duct bank segments are specified in this standard at the interface to the duct bank, and their precast structures are coordinated with the structural and civil drawings. {note}
## Grounding and bonding of the duct bank, its conduits, and its structures is coordinated with [[sync/grounding-and-bonding]]. {note}
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default: "1 year from substantial completion"
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