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. Preparation

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

2. Takeoff

Takeoff all equipment that is not #12
Go by Drawing in chronological order
Takeoff Enlarged Drawings
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 .../

Roof Mounted Equipment

Unit condensing units

Put homeruns on the Area of the dwelling unit. Put connections on the Area of the CU.

.../CONDENSOR HOME RUNS

.../CU CONDENSER SLEEVE W/ FLEX - NO HMRN WIRE

NO SLEEVE: Routed through a "doghouse" (a large weatherproof opening) with several other feeds. Used where drilling openings for individual sleeves would be impractical.

PVC SLEEVE, EMT SLEEVE: Routed up through the roof, (optionally through a disconnect) with flex to the equipment.

Equipment Racks: 20 disconnects per rack

DISTRIBUTIION/TRAPEZE RACK SUPPORT .../...

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. Review

Count Car chargers and location

2.2 KiB Raw Blame History