Add a GFCI Outlet Circuit to a Bathroom

Bathroom GFCI Outlet
Electrical Question: Jon in New Jersey asks: How should a GFCI Outlet circuit be installed for an existing bathroom?

• I have a bathroom with a GFCI outlet that feeds a vanity light and a exhaust fan/light unit.
• Currently, this bath room shares a 15 amp circuit and I want to move it to its own circuit.
• I would like to run a 12/2 wire to the GFCI, which it currently does not have. But the vanity lights and ceiling fan are run with 14/2 wire.
• Can I do this or do I need to re-wire all the fixtures with 12/2?

This electrical wiring question came from Jon, a Homeowner, in Ewing, New Jersey.

Dave’s Reply:
Thanks for your electrical wiring question Jon.

Bathroom GFCI Outlet Circuit

Application: Bathroom Electrical Wiring.
Skill Level: Intermediate to Advanced – Best installed by a Licensed Electrician.
Tools Required: Electricians Pouch of Hand Tools for Rough-In Wiring, Electric Drill and Auger Bits and Extension Cord.
Estimated Time: Depends on the extent of the bathroom remodel project, the type of construction and available access to the project area.
Precaution: Any existing wiring in the immediate area that may interfere with the installation of new construction materials should be identified, turned OFF and Tagged.
Notice: Modifying existing wiring or installing additional bathroom electrical wiring should be done according to local and national electrical codes with a permit and be inspected.

Adding a Bathroom GFCI Outlet Circuit

• Bathroom GFCI Circuits in the Home
  
  • In newer homes you will find a dedicated 120 volt 20 amp GFCI Circuit to the Bathroom Outlets. Typically the GFCI circuit is not shared with the bathroom lights or exhaust fan unless these devices are located above the shower or bathtub area.
  • In older homes you may find that the GFCI outlet circuit also provides power to the vanity light and exhaust fan. This is the case with Jon, who would now like to install a separate circuit for the bathroom GFCI Outlet.
  • So lets review this project:
    Jon’s bathroom has a 14 amp 120 volt circuit that takes care of the bathroom GFCI outlet, the vanity light and the exhaust fan.Jon wants to add a new 20amp 120volt circuit for the bathroom outlet, but what should be done with the existing 14amp circuit?
  • Installing the GFCI Outlet Circuit
    The existing 14amp circuit for the vanity light and exhaust fan and light can remain the same, however the wiring to the GFCI outlet should be removed.
    The new 20amp 120volt circuit may be installed and connected only to the bathroom GFCI outlet.
    Now there are two circuits for the bathroom, however the wiring of each circuit is kept separate.

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» You Can Avoid Costly Mistakes! « Here's How to Do It: Wire It Right with the help of my Illustrated Wiring Book Great for any Home Wiring Project. Complete Guide to Home Electrical Wiring Perfect for Homeowners, Students, Handyman, Handywomen, and Electricians Includes: Wiring GFCI Outlets Wiring Home Electric Circuits 120 Volt and 240 Volt Outlet Circuits Wiring Light Switches Wiring 3-Wire and 4-Wire Electric Range Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet How to Troubleshoot and Repair Electrical Wiring Wiring Methods for Upgrading Electrical Wiring NEC Codes for Home Electrical Wiring ....and much more.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

Electrical Tips to Help You Wire it Right The Safest Way to Test Electrical Devices and Identify Electric Wires! The Non-Contact Electrical Tester This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use. The Quickest Way to Check for Faulty Electrical Wiring! The Plug-In Outlet Tester This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring. It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use. Strip Off Wire Insulation without Nicking and Damaging the Electric Wire! The Wire Stripper and Wire Cutter My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires. This handy tool has multiple uses: The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation. The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets.. The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.

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Home Electrical Wiring and Electrical Repairs Please Note: Unless otherwise posted, please refer to the following Guidelines when working on Electrical Projects: Skill Level: Intermediate to Advanced - Electrical Repairs and Circuit Wiring is Best Performed by a Certified Electrician or Licensed Electrical Contractor. Electrical Tools Required: Basic Electricians Pouch of Hand Tools, a Voltage Tester and a Multi Meter. Estimated Time: Depends on personal level experience, ability to work with tools, work with electrical wiring, and the available access to the project area. Precaution: Identify the project circuit, turn it OFF and Tag it with a Note before working with the wiring. Important: Modifying existing electrical circuits or installing additional electrical wiring should be done according to local and National Electrical Codes, with a permit and be inspected.

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