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Old 01-03-2012, 01:47 PM   #1
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wire & conduit installation

My town utilizes NEC 2008. I'm in the process of installing a inter-lock kit for a portable 6500W generator (240V, 30 amp). The portable generator will be outside under overhead cover, and the main house distribution panel is located indoors (garage unfinished space).The power inlet box will be mounted outside along exteroir wall feeding the main panel via an interlock kit located inside. The wire size will will be a number 10 with 4 (black, red, green, white) wires. The questions I have are as follows:

*Does the wire have to be solid or can it be stranded?

*Since the insulated wire will be routed through the exterior garage wall (mason) thru unfinished space along the wall, I'm sure it will have to be in condiut or some type of protection. What is required, metal conduit, PVC conduit, flexible metal shielded cable (BX), or PVC flexible (liquid tight) cable?

*Does the ground wire need to be insulated?

thank you


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Old 01-03-2012, 06:42 PM   #2
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Cables do not have to be in conduit unless it is to protect them from physical damage. Individual conductors require conduit.

Solid or stranded is fine for the #10.


Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 01-03-2012, 07:26 PM   #3
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....... EDITED OUT for the sake of not giving/taking mis-information or information against code.

Last edited by jproffer; 01-03-2012 at 07:40 PM.
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Old 01-03-2012, 09:43 PM   #4
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rcassidy...I would run the individual wires through metallic or non-metallic conduit. It's neater and makes for room for expansion in case you decide you need a larger generator. 4- 10's stranded will suffice instead of a cable.
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