Mike Dolt Enterprises
Mike Dolt Enterprises
User: Little Bill, Location: Tennessee NEC:2017
Asked on: Thursday, March 31, 2011 at 9:15 pm EDT
Answered on: Tuesday, May 14, 2024 at 3:35 am EDT
Question: I have a textbook example of not following code or having someone do the work that will. I'm working on a house and HO came to me with a problem unrelated to what I am doing. She is having a breaker trip when using her hairdryer. Turns out there is 2 bathrooms, a bedroom and a den/family room on one circuit. I checked the circuit with loads on that were said to be on when the breaker tripped. It is pulling 18-21A. I'm not sure if I had everything on but that was enough for me to see it was an overloading problem. I definitely need to pull at least 2 new circuits. The problem is the areas that need the circuits have no overhead space or crawl space since it is on a slab. Other than ripping stapled ceiling tile out or running cable in Wire Mold, anyone got any experienced, saged advise on how to run these new circuits? Any help would be appreciated.
Concealed Wiring Options
Fish Tape Method
Fish a new NM-B (Romex) cable through existing walls and ceilings using a fish tape. Drill small access holes at strategic locations for pulling the cable.
Drywall Access Panels
Install recessed drywall access panels in the ceiling or walls to provide access for wiring. This allows for future adjustments and maintenance.
Under Carpet Raceway
Run NM-B cable under carpet using raceway channels that can be concealed under the carpet edge. Ensure the raceway has ample capacity and is rated for the number of circuits.
Behind Baseboards or Moldings
Route NM-B cable behind baseboards or crown moldings if space allows. Not as concealed as other methods but can be less disruptive.
Surface-Mounted Wiring Options
Wiremold Raceway
Run NM-B cable inside Wiremold raceway that is surface-mounted on walls or ceilings. This is a quick and easy way to add circuits without major construction.
EMT Conduit
Install EMT conduit on walls or ceilings and run NM-B cable or individual conductors inside. This provides a rugged and durable solution but can be more expensive and time-consuming.
Cable Tray
Use cable tray to run multiple NM-B cables or individual conductors on walls or ceilings. This provides flexibility and easy access for future modifications.
Other Considerations
Electrical Codes
Ensure all wiring complies with current electrical codes and is inspected by a qualified electrician.
Load Calculations
Perform thorough load calculations to determine the appropriate ampacity and circuit protection for the new circuits.
Accessibility
Consider future access for maintenance or upgrades when selecting a wiring method.*
Cost and Disruption: Weigh the cost and potential disruption of each method against your specific needs and constraints. Flag for review