zmVault/electrical.md

id, aliases, tags

id	aliases	tags
electrical		occupational/systems/electrical

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