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Switchgear

Info

Special Equipment

Company Switches

[!info] Also Known As

  • Theatrical Switchboards
  • Stage Switchboards

Company switches are lighting control devices unique to performance venues like those subject to NEC Article 520: Theaters, Audience Areas of Motion Picture and Television Studios, Performance Areas, and Similar Locations

!company-switch.png

[!cite] NEC Article 520.2 Stage Switchboard. A permanently installed switchboard, panelboard, or rack containing dimmers or relays with associated overcurrent protective devices, or overcurrent protective devices alone, used primarily to feed stage equipment.

Sequence

1. Estimate preparation

  1. Initial the OneNote
  2. In the drawings, locate:
  • Riser Diagrams
  • House Panels

2. Takeoff

  1. Build Items in Distribution:
  • Panelboards
  • Switchboards
  • Meter centers
  • Generators
  • Transfer switches
  • Generator connection cabinets
  • CT cabinet
  • Power monitor
  1. Takeoff Common Assemblies:
  • XFMRs
  • Disconnect switches
  1. Takeoff Items in Item Database:
  • Wireway (Trough/Gutter)
  1. Takeoff Temp Assemblies:
  • Fire Pump
  • Fire Pump Controller

When building panelboards/switchboards, add terminations according to an example from the schedules. Do not include feeder terminations.

Items to Avoid:

  • Tap Boxes
  • Bus Duct
  • Vault Room
  • Anything FPL
  • Grounding
  • Elevator Room

SPD's/TVSS's

Labor only.

Specific item is not important, but I use SPLITTERS / SOCKETS / CABINETS/METER SOCKETS & CABINETS/METERING CURRENT TRANSFORMER (Labor = 1.5hrs) for consistency.

Submeters/Power Monitors

See switchgear#SPD's/TVSS's

Panelboards

DISTRIBUTION/DIST PANELS & UNIT LOAD CENTERS/...

Enclosed Circuit Breakers

Treat as disconnect switch.

Generators

Add DISTRIBUTION FITTINGS/GENERATOR SET UP.

Generator Connection Cabinets

Use a Distribution Panel of equal amps.

Transfer Switches

"300A ATS"

Transfer Switches 1200A+

Use 1200A MTS/ATS, and add:

  • ==CA.33.14.AMPS==
  • Factor 1 = 3
  • ==Delete 1200A==

Meter Centers

SWITCHGEAR & METER CENTERS/METER CENTERS/... METERING SECTION

Adjust Factor 1 for meter stacks, delete zeroed items.

3. Extension (Review and Checking)

  1. Generator
  • Ensure takeoff is in the generator Area and System breakdowns
  • Put location, quantity, and type on OneNote