Ask Experts Questions for FREE Help !
    alexander's Avatar
    alexander Posts: 1, Reputation: 1
    New Member

    Apr 5, 2004, 05:42 PM
    Circuit breakers
    I would like to up grade the amps going to my garage so I can run my saws and power tools with out dimming my shop lights. I currently have a old style fuse box in the garge feed with 12ga uf cable run off a 20amp circuit breaker in the service panel. My plans are to replace the fuse box with a new G.E. subpanel 125amp 6/12. Replace the uf cable with 6ga. 4 wire run through 1" schedule 40 PVC. I figure future demands warrant overkill on subpanel & wire size. Current demands will not exceed 23amps at any given point in time since I can only use one power tool at a time. Local codes dictate GFCI outlets in the garage. My question is this: Instead of individual GFCI outlets can I install GFCI circuit breakers at the subpanel or can I use a 2 pole GFCI breaker as a feeder breaker?
    phase90's Avatar
    phase90 Posts: 2, Reputation: 1
    New Member

    Jul 29, 2004, 05:43 PM
    Re: circuit breakers
    Use a GFCI outlet as the first in line from the breaker to the outlet string. If both the black and the white wires are connected to the outlet AND the rest of the string is connected to the output terminals of the GFCI, the whole string has the GFCI function.

    The GFCI outlet has instructions for installing it as part of a chain.

    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member

    Jul 29, 2004, 07:28 PM
    Re: circuit breakers
    A double pole GFCI breaker at the main panel might be OK. I did have trouble with plugging a sub panel into a GFCI outlet. Because the neutral and ground were connected to the same buss at the sub panel, the GFCI would trip. GFCI outlets are relatively cheap now. You can use one for the first outlet in each circuit and feed the rest from the indicated terminals for feed through GFCI.

    Are you planing 2 hot wires, a neutral, and a ground for your 6-4 cable? Check code on using the same neutral for both poles. Usually you run singles in a conduit, a hot and a separate neutral for each circuit plus one ground for non metallic conduit.

Not your question? Ask your question View similar questions


Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.

Check out some similar questions!

Trane Air Condition circuit breakers trips [ 7 Answers ]

I have a Trane Air Condition that refuses to run more that 10 minutes without tripping the circuit breaker when tempertures are below 32 degs. I read that at low tempertures, more features are needed to keep the heat up. Operation of these features seems to overload the circuit. There must be a...

Recepticals and breakers [ 1 Answers ]

How many receptical can be put on a 20 amp breaker? Also would it be okay to put lampost lights on a breaker that services my basement? The total wattage would be 1055 watt. Thank you, Don

ARC fault breakers ? [ 4 Answers ]

I see where the 2005 NEC requires ARC fault breakers on all bedroom circuits,lighting and wall recepticals. It appears that this is for new construction. Would this also apply to rewiring an old house? Thanks in advance. Tom

Outside GFI circuit - 15amp outlet on 20amp circuit [ 1 Answers ]

I need a better understanding of what I should do when setting up my new outdoor circuit. I've got a circuit that runs about 150 feet, so I'm installing 10g wire to allow for the voltage drop. I read in the Home Depot Electrical 123 book that I can have at most a 15amp circuit with 10g wire on...

Circuit breakers [ 2 Answers ]

It seems so far that our kitchen is wired all on the same circuit. When we use the oven and microwave or the microwave and the toaster oven which is on the other side of the room the breaker trips. That breaker is currently 15amps. Would it be all right to change that breaker to a 25 or 30 amp for...

View more questions Search