Electrics for patio fan

I want to put electric out to fans/lights under new patio cover over outside deck. I can follow a hot line from fuse box in garage to a ground fault outlet in the garage. the hot wire coming up out of this GF outlet then goes to both bathrooms. I'm thinking about splicing a new hot wire ( to go to patio fans/lights) at the point the GF wire comes up to attic from the GF garage outlet as it goes out tho the batrooms. Does this sound reasonable and safe since it will provide a GF to the outside fans??? Thanks..
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Depends on what you mean by "splice". You can't just connect a wire inline to the existing wire, you need to make all connections inside an approved electrical box. Connections such as this are normally done in Octagon box with a blank cover installed and the box must be properly mounted and accessible for maintenance purposes.
Since cutting the existing wire would not leave sufficient wire to make proper connections inside the new box, the wire from the box to its existing termination would also likely have to be replaced with a longer section (you should have 6" of stripped wire inside the box and make the connections with proper wire nuts/connectors).
You should also be sure that the circuit has sufficient capacity to handle the extra load.
Having said all this, I'd strongly recommend you hire an electrician rather than risk fire/death if you are not 100% sure of what you are doing!
John

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You seem to be unnecessarily looking at GFCI sources. GFCI is only required for outlets (cord and plug). I really try to leave GFCI's alone unless required. I "cut in" a lot of boxes for additional connections, as mentioned in previous post. I use a large nail-in box, and a small nail-in box, at least a foot apart. The small one gets a new extension wire only, and the large one gets the feed to the new circuit. A circuit feeding a motor needs a disconnect (switch) or a lock-out for the panel breaker.

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