zmVault/electrical.md

id, aliases, tags, title

id	aliases	tags	title
electrical		destiny/permanent occupational/systems/electrical status/draft type/guide	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. 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 .../

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: Max 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

1. Count Car chargers and location