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09-19-2012, 09:51 AM
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#1
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Newbie
Join Date: Sep 2012
Posts: 3
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Adding 2 Circuits From Main Panel to Shed
I want to have 2 circuits in my shed. I have 7 open spots in the load center in the house. I need to know what I need and need to do to accomplish this. I assume that I will need a UF/B type of wire to run from the load center to a spot in the shed that will have a sub-panel. From that sub-panel I plan to distribute those two dedicated circuits out to two separate outlets inside of the shed.
I need to know what materials to purchase and how the wiring needs to be done in the load center and the sub-panel. Can someone assist?
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09-19-2012, 09:56 AM
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#2
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Lic Electrical Inspector
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,365
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by meppwc
I want to have 2 circuits in my shed. I have 7 open spots in the load center in the house. I need to know what I need and need to do to accomplish this. I assume that I will need a UF/B type of wire to run from the load center to a spot in the shed that will have a sub-panel. From that sub-panel I plan to distribute those two dedicated circuits out to two separate outlets inside of the shed.
I need to know what materials to purchase and how the wiring needs to be done in the load center and the sub-panel. Can someone assist?
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WHat are they supplying? If it is just receptacles and lighting, 12/3 UF will give you 2 circuits (MWBC), but without the need for a panel suitable for use as service equipment.
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09-19-2012, 10:44 AM
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#3
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Newbie
Join Date: Sep 2012
Posts: 3
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Adding 2 Circuits From Main Panel to Shed
they are supplying two separate dedicated circuits that will be used for outlets and lighting.
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09-19-2012, 11:02 AM
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#4
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Lic Electrical Inspector
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,365
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Adding 2 Circuits From Main Panel to Shed
12/3 UF on a two pole breaker. If the circuit is GFI protected it can be 12" deep. Non GFI has to be 24" deep. If you are trenching I would run PVC conduit and run cable through the conduit. Lighting does not require GFI. Receptacles require GFI.
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09-19-2012, 11:21 AM
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#5
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Member
Join Date: May 2009
Location: Easton MD
Posts: 1,827
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by electures
12/3 UF on a two pole breaker. If the circuit is GFI protected it can be 12" deep. Non GFI has to be 24" deep. If you are trenching I would run PVC conduit and run cable through the conduit. Lighting does not require GFI. Receptacles require GFI.
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You gonna mention a disconnecting means.... 
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09-19-2012, 11:22 AM
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#6
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Licensed electrician
Join Date: Sep 2007
Location: Maryland
Posts: 6,004
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Adding 2 Circuits From Main Panel to Shed
Except for a sleeve, I certainly would not want to pull UF in a conduit.
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09-19-2012, 11:24 AM
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#7
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Lic Electrical Inspector
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,365
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Adding 2 Circuits From Main Panel to Shed
Quote:
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Originally Posted by Code05
You gonna mention a disconnecting means.... |
Geeze. I wanted to save something for somebody else. Thanks for the pick up.
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09-19-2012, 11:45 AM
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#8
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Member
Join Date: Nov 2008
Location: North and East Texas
Posts: 57
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Adding 2 Circuits From Main Panel to Shed
So assuming the "shed" is detached, would that require a seperate ground rod and disconnect? I assume people do the 12/3 all the time and don't have issues but wouldn't code compliance be better?
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09-19-2012, 01:19 PM
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#9
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Member
Join Date: May 2009
Location: Easton MD
Posts: 1,827
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by Daltex
So assuming the "shed" is detached, would that require a seperate ground rod and disconnect? I assume people do the 12/3 all the time and don't have issues but wouldn't code compliance be better?
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Disconnecting means, yes. 225.31 NEC
Ground rods or other electrodes, no, if it is a single Multiwire Branch Circuit and contains an Equipment Grounding Conductor. 250.32 NEC.
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09-19-2012, 01:20 PM
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#10
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Licensed Pro
Join Date: Mar 2007
Location: SC
Posts: 1,420
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by Daltex
So assuming the "shed" is detached, would that require a seperate ground rod and disconnect? I assume people do the 12/3 all the time and don't have issues but wouldn't code compliance be better?
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The MWBC (12/3) would not require a separate grounding electrode. It would require some type of disconnect at the shed.
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09-19-2012, 01:35 PM
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#11
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Member
Join Date: May 2009
Location: Easton MD
Posts: 1,827
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by HouseHelper
The MWBC (12/3) would not require a separate grounding electrode. It would require some type of disconnect at the shed.
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Beat you by 10 seconds.... 
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09-19-2012, 02:36 PM
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#12
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Lic Electrical Inspector
Join Date: Dec 2009
Location: The Great Police State of New Jersey
Posts: 1,365
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by meppwc
I want to have 2 circuits in my shed. I have 7 open spots in the load center in the house. I need to know what I need and need to do to accomplish this. I assume that I will need a UF/B type of wire to run from the load center to a spot in the shed that will have a sub-panel. From that sub-panel I plan to distribute those two dedicated circuits out to two separate outlets inside of the shed.
I need to know what materials to purchase and how the wiring needs to be done in the load center and the sub-panel. Can someone assist?
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What version NEC has been adopted in your local?
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.
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09-19-2012, 03:35 PM
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#13
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Member
Join Date: Nov 2008
Location: North and East Texas
Posts: 57
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Adding 2 Circuits From Main Panel to Shed
Quote:
Originally Posted by Code05
Disconnecting means, yes. 225.31 NEC
Ground rods or other electrodes, no, if it is a single Multiwire Branch Circuit and contains an Equipment Grounding Conductor. 250.32 NEC.
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Thanks for the clarification. I guess I was confused on it being a MBC and not a small sub panel.
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