---
id:
aliases: []
tags:
  - occupational/systems/switchgear
  - type/guide
---
# 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|500x625]]

> [!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. 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

2. Takeoff Common Assemblies:
  * XFMRs
  * Disconnect switches

3. Takeoff Items in Item Database:
  * Wireway (Trough/Gutter)

4. 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. Review

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