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Need help determining wire size, wire type, and conduit size

Customer Question
for 200amp panel with a...
Need help determining wire size, wire type, and conduit size for 200amp panel with a 200 amp subpanel. Here is a list of my questions: http://mnjustin.com/diagram.jpg
Submitted: 3 months ago.Category: Electrical
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Answered in 1 minute by:
8/15/2017
Electrician: Mike G., Master Electrician replied 3 months ago
Mike G.
Mike G., Master Electrician
Category: Electrical
Satisfied Customers: 7,775
Experience: Proven Professional 48 years Experience
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Hi, I'm Mike and I'll be assisting you. Please stand by while I review your question.

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Electrician: Mike G., Master Electrician replied 3 months ago

Is this residential or commercial? Send the diagram.

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Customer reply replied 3 months ago
residential. Can you see the diagram on this link: http://mnjustin.com/diagram.jpg
Electrician: Mike G., Master Electrician replied 3 months ago

Attach the diagram to your message.

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Electrician: Mike G., Master Electrician replied 3 months ago

Meter to main service panel- 2 inch PVC with 2-4/0 & 1-2/0 aluminum THHN or URD.

Main service panel needs a lug kit not a sub panel breaker. They never allow on of that size. The alternative is a disconnect separate from the panel. #4 copper ground wire.

Sub feed 2 1/2 inch PVC with 4/0 URD 4 CONDUCTOR. Ground #4 copper.

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Customer reply replied 3 months ago
is URD 4 CONDUCTOR permitted if part of the run from the main panel to the sub panel is in a building?
Electrician: Mike G., Master Electrician replied 3 months ago

Yes it is.

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Customer reply replied 3 months ago
2-4/0 & 1-2/0 aluminum from masthead to meter: what type of wire?
Electrician: Mike G., Master Electrician replied 3 months ago

Use the URD or a THWN. The W means the insulation is suitable for wet enviorment. Any wiring outside is wet enviorment.

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Customer reply replied 3 months ago
URD 4 CONDUCTOR: does that mean 4/0, 4/0, 4/0, 2/0?
Electrician: Mike G., Master Electrician replied 3 months ago

For the sub feed, yes.

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Customer reply replied 3 months ago
Main service panel needs a lug kit not a sub panel breaker. Does this mean that the hots from the URD 4 CONDUCTOR for the subfeed does not connect to a breaker in the main panel?
Electrician: Mike G., Master Electrician replied 3 months ago

Never saw a panel that would allow a breaker for a sub feed that big. The lug kit looks like a breaker without a switch. It plugs in and makes the main breaker the breaker protecting the sub feed.

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Electrician: Mike G., Master Electrician replied 3 months ago

The panel label will show breaker limits.

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Customer reply replied 3 months ago
something like this?: http://www.homedepot.com/p/Siemens-Sub-Feed-Lugs-for-150A-225A-Load-Centers-ECLK2225/207050664
Electrician: Mike G., Master Electrician replied 3 months ago

That's it.

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Customer reply replied 3 months ago
are there any options that leave me the option to shut off power to the subpanel from the building with the main panel in it?
Electrician: Mike G., Master Electrician replied 3 months ago

The main breaker will shut off both panels. The other option is to install a disconnect and junction to feed both panel mains.

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Customer reply replied 3 months ago
Ground #4 copper: stranded or solid?
Electrician: Mike G., Master Electrician replied 3 months ago

Stranded.

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Electrician: Mike G., Master Electrician replied 3 months ago

One more thing. You'll need to install a ground bridge between the double rods and the panel on the #4 copper. It is for grounds on phone, cable TV etc.

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Customer reply replied 3 months ago
I am struggling to find URD Quadruplex. Do any of these work for the subfeed?
4/0-4/0-4/0-2/0 Black Stranded Al USE MHF Cable
4/0-4/0-4/0-2/0 Gray 3E AL SER Cable
4/0-4/0-4/0-2/0 Grey Stranded Aluminum SER Cable
Electrician: Mike G., Master Electrician replied 3 months ago
Try an electrical supply house. Geaybar, Menards are 2. You won't find it at a home center.
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Electrician: Mike G., Master Electrician replied 3 months ago

It is available on Amazon.

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Customer reply replied 3 months ago
100' Aluminum URD wake 4/0 4/0 4/0 2/0 Cable Direct burial Wire XLP USE ???
Customer reply replied 3 months ago
do I need to install this wire in conduit for the portion of the run inside the building?
Customer reply replied 3 months ago
thanks for all of your help, I appreciate it!!!!
Electrician: Mike G., Master Electrician replied 3 months ago
Anytime, you're welcome.
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Mike G.
Mike G.
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