94 lines
2.3 KiB
Markdown
94 lines
2.3 KiB
Markdown
---
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id:
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aliases: []
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tags:
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- destiny/permanent
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- occupational
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- status/incomplete
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- type/guide
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title: Wiring Methods Selection
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---
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# Wiring Methods Selection
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Seek to use the cheapest method,
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as determined by Senior Construction Estimator
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and Database Administrator,
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as allowed for the situation.
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![[pre-takeoff-research#Requirement Precedence]]
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## By Construction Type
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See [[ibc-construction-types]] for more info.
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### Construction Types I, II
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Nonmetallic-sheathed cables (NM, SE, etc.)
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are not fire code permissible in these types.
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PVC < MC < EMT < IMC < RMC
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### Construction Types III, IV, V
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NM/SE < PVC < EMT < IMC < RMC
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## By Wiring Method
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### Electrical Metallic Tubing (EMT)
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#### Fittings
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Set-screw < compression
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> [!info]
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> EMT has a third coupling type "indenter",
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> which are crimped onto the conduit using a special tool.
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> These are usually only mentioned in specifications
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> to say that they are unacceptable.
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> [!info] Edge Case: Vanderbilt Central Neighborhood Residential College
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>
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> > [!cite] Vanderbilt Central Neighborhood Residential College - Project Specifications (pp.)
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> > Fittings for Type EMT Duct Raceways:
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> > * Coupling Method: Compression coupling or Setscrew coupling.
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> > Setscrew couplings with only single screw per conduit are unacceptable.
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>
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> > [!quote] Joel Jansen via Microsoft Teams @ 2025-10-15 09:33 AM
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> > use set screw 🙂
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### Rigid Polyvinyl Chloride Conduit (PVC)
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Not usually permissible exposed indoors in any construction,
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except in Florida.
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May require rigid stub-ups in certain cases,
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which could make EMT more cost-effective.
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Consult with the Senior Construction Estimator in this case.
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## By Use-Case
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### Multi-Circuit Homeruns
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> [!quote] Art Baldwin (pp.)
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> Multi-circuit MC is not cost-effective
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> when considering the difficulty of rework.
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> Use conduit, even EMT if necessary.
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## By Market Type
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### Assisted Living
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MC-AP may be required.
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## Searching Specifications
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> [!info] Example Specs Relevant to Wiring Methods Selection
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> * 26XXXX - Raceway And Boxes For Electrical Systems
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> * 26XXXX - Conduits For Electrical Systems
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> * 26XXXX - Underground Ducts And Raceways For Electrical Systems
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>
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> * 26XXXX - Low-Voltage Electrical Power Conductors And Cables
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>
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> * 26XXXX - General Requirements For Electrical
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> * 26XXXX - Common Work Results For Electrical
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