3rd Garage subpanel

[bobbyu]

In the next couple months I will be adding a 3rd garage to our existing two car garage. It will be 18' by 36'. Kind of a odd size, but I can't go any wider due to needing to stay 12' off my property line and my existing house is 36' wide. I got many of my questions answered from this thread and others. http://www.garagejournal.com/forum/showthread.php?t=231200&showall=1 I plan on coming out of my existing 200amp panel with ser cable http://www.mayerelectric.com/itemDetailFilterPH.action?codeId=1064098 using a 90amp breaker. I think I can come out of my existing panel over the top of one finished room then into an unfinished storage room. That is my main question. There are water lines & NG line following this path secured to the bottom of the floor joist. Can I do the same with the Ser cable? Keeping a little distance from the other lines. Or should I jump up once I get throught the finished room and bore holes in the joist? Once I get to the wall I hope to jog over and go through the end wall in a hole I hope to bore from the new garage into the unfinished storage room. If I can't do that can I just run the ser cable straight through the end wall into the new garage and then jog over and into the new wall then into my subpanel? If I do that I would like to protect the ser cable some way. Maybe by putting it into conduit. It won't buried, just something to protect it for the 3'-4' it runs along my existing wall before it enters the new wall where my subpanel will be. Attached are some pictures of my existing subpanel and the finished room and the storage room.
Thanks for your help
Bob

 

[pattenp]

The SER you listed is okay but the picture is wrong. The picture is SEU.

This is what SER looks like....

 

[Mustang51js]

It would be better if you drilled out joists and ran them through, drill a 1 1/4 hole even all the way and it will be pretty easy to pull through. You could get away with stapling it on the bottom but for a little extra time it's better protected through the joists

 

[bobbyu]

The SER you listed is okay but the picture is wrong. The picture is SEU.

This is what SER looks like....
pattenp--I guess I copied the url and didn't pay attention to the picture. Hope to get by the building inspectors office this week and get the permit process started and see if he likes the wire and then find it in town.

Mustang51js--Boring the holes would most likely be the smartest way of doing it. I'm hoping to be able to bore from the new addition into the unfinished wall in my storage room and go through that way. Might have to clean a bunch of stuff from the top storage shelve to get to the area. Thanks for the ideas.
Bob

 

[pattenp]

I can't imagine the inspector having a problem with the use of SER for the feed to the sub-panel. SER is commonly used for this application. Code wise is should be okay to strap the wire along the bottom edges of the floor joist as long as the wire is larger than #6. Wire that is #6 or smaller needs to be pulled through bored holes in the joist. You should check this with your inspector.

 

[bobbyu]

I stopped and got my permit but the electrical inspector wasn't in at the time. I'll have stop back. Thanks
Bob