Redline Markup on Electrical Plans
By knowing how to do Levven takeoffs and redlines you can:
- Maximize materials savings
- Give field crews plans they can follow to wire and trim homes
- Know what Levven products are needed to complete the installation
- Make potential future servicing easier by keeping controllers accessible
Add Wire Markup on Electrical Plan
Two-conductor wire (2C) is represented by a 1-point dashed line.
Three-conductor wire (3C) is represented by a 3-point dashed line.
Home Runs
The home run is 2C wire directly from the electrical panel to a fixture or controller. Mark it with an "H" on the redline.
Blue Wall Plate
The "Blue Wall Plate" is a GPC10 installed behind the Levven Blue Wall Plate. It's typically located near the electrical panel to control the light in that room.
The Blue Wall Plate holds one GPC10 controller and is installed in a single-gang box.
Add a home run from the electrical panel to the Blue Wall Plate, and then wire to the switched load and continue with power to the next controller.
- See Installing the Blue Wall Plate for more details.
Box Fill
Verify box fill requirements with your local electrical code.
Each single-output Levven controller counts as two conductors for box fill. Typically, each junction box may have maximum 12 conductors - 10C from wire, and one single-output controller.
Constant Power
Each controller needs constant power for proper operation.
When there is a second controller after the first controller's load, and the first controller is switching multiple fixtures, use 3C wire.
Wire Between Junction Boxes
Add 2C and 3C wire to provide constant power to each controller, and connect controllers with their switched loads.
Aim for short wire runs and avoid areas where there may be a significant amount of mechanical equipment
Smoke Detectors
Smoke detector junction boxes may be used for controllers switching other loads (such as a ceiling fan).
Use 2C wire to the first smoke detector and use 3C wire between smoke detectors.
- Box fill is 9C + one single-output controller. Beyond this, use an extension ring.
Add Labels for Junction Boxes
Adding labels for each junction box which contains a controller tells crews:
- Which kind of junction box to use.
- Which controller is installed in the junction box.
- How many conductors enter and exit the junction box.
For each junction box containing a controller, add a label like the one below:
Label Color
Color | Controller Type | Controller Part Numbers |
Blue | Blue Wall Plate | GPC10 |
Green | Single-output | GPC10, GPC20, GPDT15, CP1-4 |
Box Type
ID Code | Description | Capacity | Equivalent Part Numbers |
DP | Deep plastic box, 25 cubic inch | One controller only | US: Carlon BH25HP Canada: Nutec WOCT |
DPWE | Deep plastic box, 25 cubic inch, with 2-inch extension ring | One or two controllers | US: Carlon BH25HP and 2-inch box extender Canada: Nutec WOCT and 2-inch box extender |
4MBR | 4” x 4” box with device mud ring | One or two controllers | US: Carlon B432ARR-UPC and 1-Gang Single-Device Flat Square Cover Canada: Nutec WRD and 1-Gang Single-Device Flat Square Cover |
SRP | Single-gang receptacle box | One controller only | US: Carlon B122A Canada: Nutec WSW |
Controller Number
The controller number is an easy reference to between the controllers listed in your takeoff spreadsheet and their locations on the redline.
Count Conductors
Count the conductors entering and exiting the junction box using the formula below:
Conductor count = (count of 2C wires × 2) + (count of 3C wires × 3)
Calculate this count for each junction box containing a controller.
Add Takeoff Details to Plan
Use the takeoff spreadsheet to generate the count of each SKU you will need to order. Add this, along with a legend, as the first page of the redline.
Builder Option Packages
When redlining for option packages, add the wiring markup as it differs for that option. Note on the electrical plan where the wiring entering/leaving the options section goes to.