Ask Experts Questions for FREE Help !
Ask
    dave-59's Avatar
    dave-59 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 26, 2010, 06:52 AM
    4 Wire Feeder Questions

    Hi according to the ugly book I just bought page 117 a separate building/structure supplied by feeder circuit shall have equipment grounding conductor sized iaw table 250.122 run with the supply conductors and connected to the building disconnecting means and grounding electrode. So what I gather from this now you have to run 4 wires in a trench. The ground and neutral is tied/bonded together in the panel boxes at both ends, along with the ground rods. Am I close? So if I plan to run a 100 amp feeder circuit, a 2-2-2-4 aluminum cable would be required? Thanks for the help. Dave
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
    Ultra Member
    		  
    #2

    Mar 26, 2010, 02:45 PM
    You will need a 4 wire cable, as you already know. The ground and neutral must be separated at the sub panel and a ground rod needs to be used as well. The ground and neutral are only tied together at the main panel, not at any of the sub panels. The size of the cable may need to be larger depending on the length of the run. The Ugly book has that info as well.
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!

Control wire questions [ 23 Answers ]

I had a minor accident with my old thermostat so I'm having to replace it, I ran into a small problem though while tracing my wires back. On my thermostat, I have Rc/Rh which are jumpered together, and a W Y G. I understand all of that and how the thermostat works, but my problem comes at the...

Adding stage lighting and amps to sound system. Wire size questions [ 5 Answers ]

Hello. We are installing a new stage lighting system and some additional amplifiers to our sound system. The sound and lighting techs have asked for ten 40 amp circuits. I personally think this is too many circuits for what they are installing, but they want room for future expansion. If I am...

Secondary 100 Amp Feeder Wire Size [ 3 Answers ]

Hello to all. I am running a feeder wire in 2" conduit from my 100 amp breaker in my house panel to my 100 amp garage panel approximately 160' away. I am wondering if #1-#1-#2 Aluminum is sufficient with a #6 Copper ground. Thanks for the help.

Feeder size [ 1 Answers ]

Hi, We are building a small art studio in our backyard. The power requirements for the building are: 1 dedicated 110V 20 amp circuit for a small kiln 1 dedicated 220V 20 amp circuit for a larger kiln 1 dedicated 110V 15 amp circuit for small wall-mounted heater/ac unit 1 dedicated 110V 15...

Feeder Wire for Sub-Panel [ 2 Answers ]

Hello my name is Mark and I have just purchased my first home. I was hoping someone could help me out in determining what size feeder cable I would need to run from my main panel to a detached garage. The length of the run would be 70 feet. The main panel is a 100 amp panel. I would be running 6...

View more questions Search