How to 'break out' multiple circuits in a single conduit??
#1
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How to 'break out' multiple circuits in a single conduit??
I'm running 3 20 amp circuits in a single 1/2'' EMT conduit.
What is the best way to 'break out' the circuits from single conduit into 3 separate conduits that will then be connected to outlets?
My current plan is to run the 1/2'' conduit into a junction box and simply pull each circuit through a separate exit point on the junction box and then have each circuit continue individually an outlet.
Is this an acceptable way of achieving the above?
Thanks!
What is the best way to 'break out' the circuits from single conduit into 3 separate conduits that will then be connected to outlets?
My current plan is to run the 1/2'' conduit into a junction box and simply pull each circuit through a separate exit point on the junction box and then have each circuit continue individually an outlet.
Is this an acceptable way of achieving the above?
Thanks!
#2
If you are using EMT, it is continuous and assembled with the proper fittings, you do not need a grounding conductor. You can use one if you choose.
For me, it will depend on how I run the conduit. Most cases I just run the conduit to the first outlet box and drop one circuit, then run to the next box and drop circuit 2, and so on. Example:
-------[1]--------[2]--------[3]
However, your method is OK too. Whatever works beast for your project.
For me, it will depend on how I run the conduit. Most cases I just run the conduit to the first outlet box and drop one circuit, then run to the next box and drop circuit 2, and so on. Example:
-------[1]--------[2]--------[3]
However, your method is OK too. Whatever works beast for your project.
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Thank you very much for the replies.
Is there any negative to running a separate ground for each circuit?
The reason I ask is that I've purchased stranded 12 gauge wire for the project and I don't mind running the extra grounds if it won't cause a problem.
Thanks again for your insight.
Is there any negative to running a separate ground for each circuit?
The reason I ask is that I've purchased stranded 12 gauge wire for the project and I don't mind running the extra grounds if it won't cause a problem.
Thanks again for your insight.
#4
You're only allowed by code to put ten #12's in a 1/2" conduit.
Figuring three wires per circuit would give you nine conductors.
The only problem is that the grounds get connected together and to the box.
You're going to wind up with a lot of unnecessary ground wire.
It would be beneficial to keep it to one common ground thru the run.
Figuring three wires per circuit would give you nine conductors.
The only problem is that the grounds get connected together and to the box.
You're going to wind up with a lot of unnecessary ground wire.
It would be beneficial to keep it to one common ground thru the run.
#6
I know...there's always a discrepancy.
My one book shows 10 and the other shows 9 in EMT with 10 in IMC. Go figure.
My one book shows 10 and the other shows 9 in EMT with 10 in IMC. Go figure.
#7
My book is the NEC tables in the back. It shows 10 for 1/2" IMC. Humm.
We could do it the long way:
EMT area for more then two wires (40%) = .122 inches
IMC area for more then two wires (40%) = .137 inches
Area of one #12 THHN wire = .0133
9 x .0133 = .1197
10 x .0133 = .133
The math checks out.
We could do it the long way:
EMT area for more then two wires (40%) = .122 inches
IMC area for more then two wires (40%) = .137 inches
Area of one #12 THHN wire = .0133
9 x .0133 = .1197
10 x .0133 = .133
The math checks out.