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Inductive Motor Loads Can Trip GFCI Outlets


By Dave Rongey - Summary:

I installed a GFCI outlet in my attic and ran the load side wires to a new, through the wall, Broan 6″ round exhaust fan via a wall switch…

GFCI Outlets and Nuisance Trips With Inductive Loads
Background: Bill, a Homeowner from Londonderry, NH

Question: I installed a GFCI outlet in my attic and ran the load side wires to a new, through the wall, Broan 6″ round exhaust fan via a wall switch. The GFCI seems to trip occasionally when the fan is turned off.
Not sure what to look for?

Dave’s Reply:
Thanks for your electrical question Bill.
GFCI Outlets are known for causing nuisance tripping for inductive loads such as:
Motors, Refrigerators, Freezers, Whole House Vacuum Systems and other devices that have an inductive load.
GFCI Protection is not required for specific dedicated circuits for such devices, however the outlets for these devices should be Single and not Duplex which would prevent using the second outlet.
NOTE: This is NOT true for GFCI protected equipment such as Jacuzzi Tubs, Spas, Hot Tubs and other such devices which are used in the presence of water which are usually protected by GFCI Circuit Breakers

I have provided the following links that lead to fully detailed information on this website that will assist you with your electrical question:

Bath Exhaust Fan

GFCI Outlet Wiring

Electrical Wire for the Home

gfi
gfci-safety
Wiring Diagram GFI
The features and benefits of GFCI outlets and receptacles will give you a clear understanding of the importance why these safety devices are required by code to help protect you and your family against accidental electrical shock hazards.

wire
electrical-wire
Electrical Wire for the Home
Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.

exhaust fan
install-bath-exhaust-fan
Installing Your Bath Exhaust Fan
Answers to all of your questions about installing a bath exhaust fan and your bathroom exhaust fan replacement project.



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How to Troubleshoot and Repair Electrical Wiring
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Electrical Codes for Home Electrical Wiring
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