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I have read that you can add a Circuit breaker GFCI to your breaker box.
Does it make any sence to add a GFCI circuit breaker to the box if I already am protected with the GFCI outlets?
Would it conflict with the outlets that are allready installed? Will it provide more safety?
There are also dimmers, as well as other electrical devices that may conflict with the 4-6 ma trip rating of a GFI.
Perhaps you should inquire of your local tradesmen about the new AFCI , and get thier take on your situation .
The other type of protection device isnt made to protect the bathroom, it is to protect the circuit from bad devices, or errant drill or saw blades. Say you have a light that has a damaged cord, the breaker will protect against that. National code now requires every bedroom circuit be protected by an Arc Fault device and all bathrooms and outlets near water, such as a kitchen or laundry area be protected by GFCI.
Here is what the 2 devices do; The AFI is a UL listed circuit breaker which is also classified for mitigating the effects of arcing faults. It protects from arcs between current carrying conductors above 75A (Square D AFI protects from arcs above 50A), and leakage to ground above 30mA.
The GFI is a UL listed circuit breaker which is classified for interrupting the circuit when more than 6mA of ground-fault leakage is detected.
In other words, the arc fault device wont protect against water hazards like the GFCI will, but the GFCI is too sensitve to protect against frayed light cords.
[This message has been edited by electricmanscott (edited October 18, 2002).]
what would i tell a potential customer?
exactly what you allude to....
1)update the service
2)install new branch circuitry for those dedicated loads
3)lessen the lodas on any older circuitry, either via splitting up older circuits into 2-3 and/or derating those older 20A circuits to 15A
4)then, and only then, research options for said remaining older ciruitry.
One should not advocate AFCI's or GFCI's for the 'bandaid' approach......