I am remodeling my bathroom and in the process changing all the electric. Right now the bathroom is fed from a single line connected to a 15 amp circuit breaker. This feeds into a metal junctrion box in the attic. When rwiring is it legal to split that feed into the 3-4 runs I need for the bathroom? I am planing on a vanity light with switch, 1 receptical, 3 recessed lights, and a vent/light. Also I am putting one of the recessed lights over the shower, will anything special need to happen with that?

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Originally Posted by NeedToVent

This feeds into a metal junctrion box in the attic. When rwiring is it legal to split that feed into the 3-4 runs I need for the bathroom? ?

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Yes, but the junction box will need to be large enough to contain all the wires. There are extension rings/boxes for most types of boxes to add volume to a junction box.

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Originally Posted by NeedToVent

Also I am putting one of the recessed lights over the shower, will anything special need to hapen with that?

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Check the manufacturers datasheet or instructions, as most will require GFI protection of the fixture if located in a shower.

Keep in mind that the Code has been for several years that a bathroom requires a 20 amp circuit with #12 wire for the receptacle. This circuit can provide power for the receptacle and any light and fan in that one bathroom only.