---
id: electrical
aliases: []
tags:
  - occupational/systems/electrical
  - type/guide
---
# Electrical

## Info

### Lighting Control

By PDI convention, [[lighting-controls]] are generally "Electrical", not "Lighting".

### Wiring Device Specifications

Wiring devices and their wall plates are a common target of [[gold-plating]].

* Device grades (commercial < specification)
* General use receptacle amp rating (N5-15R < N5-20R)
* Device plate material (plastic < nylon < stainless steel)
* Device plate size (standard size < mid-size < oversize "jumbo")
* Screwless plates
* Floor box covers (plastic < brass < aluminum)

## Sequence

### 1. Estimate preparation

1. Read about the project specifications and construction type
2. Locate Equipment Schedules
3. Device specs (Decora or Standard)

### 2. Takeoff

1. Takeoff all equipment that is not #12
2. Go by Drawing in chronological order
3. Takeoff Enlarged Drawings
4. Do final checklist in electrical takeoff notes

> [!tip]
> It is sometimes easier to rebuild a designation than to modify it.
> For designations with existing takeoffs, Right-Click > `Empty Designation`.
> The build process can then be completed anew.

#### Mechanical Connections

`COMMON ASSEMBLIES`/`MECHANICAL CONNECTIONS ...`/

##### CU/IP

* Units Condensing Unit
* Mechanical Connection

##### Trash Chute

Horizontal:
* Check if shown on power drawings as mech connection
  * If not, use 100ft length

Vertical (Riser):
* Takeoff: `COMMON ASSEMBLIES`/`MISC ASSEMBLIES`/`TRASH CHUTE RISER CIRCUIT...`
* Uncheck Link 'Enable Livecount'
* Takeoff in Typical
  * Length = average floor to floor height

### 3. Extension (Review and Checking)

1. Count Car chargers and location