wire size to sub

Reply

  #1  
Old 05-01-07, 06:06 PM
Member
Thread Starter
Join Date: May 2007
Location: Indiana
Posts: 27
wire size to sub

hello all....
i just wanted to check my thoughts on my plans...
detacted garage with a 100 amp sub panel house main is 200 amp. 80 feet between the two. i going to use AL. wire buried maybe in pvc conduit 1-1/2". now at H.D. they got, 2-2-4-6 AL SEU MHF.
never heard of the SEU MHE (made by south wire)
i know ill need #2 Al for the feeds this correct?
but will the #4 And #6 be good enough for the ground and neutral?
neutral and ground be bonded or seperated in sub panel?
gounding rod outside
any and all input is welcome
Thanks
 
Sponsored Links
  #2  
Old 05-01-07, 06:38 PM
Speedy Petey's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Nov 2003
Posts: 2,455
First and foremost. Where are you located???

2-2-4-6 should not be SEU, it would be SER. I am not sure what you are looking at.

More importantly do NOT use cable in conduit. You can use URD which is three or four conductors twisted.
In my area 2-2-2-4AL URD is standard issue for a 100 amp sub-feed.

OK everyone else, let me have it. Don't forget , I did say "in my area".
 
  #3  
Old 05-01-07, 07:01 PM
Member
Thread Starter
Join Date: May 2007
Location: Indiana
Posts: 27
im in southern indiana and thats what home depot has 2-2-4-6 its twisted

thats wat the lable had wrote on it i got a pic of it but can't post it on here
2-2-4-6 AL SEU MHF $1.55/foot
why not run it though conduit?
btw where u at?
 
  #4  
Old 05-01-07, 07:22 PM
Speedy Petey's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Nov 2003
Posts: 2,455
I am in NY.

If it is simply twisted, but with no outer jacket that is fine for conduit use.

Apart from getting into the code aspect of things, it is considered bad practice to use cable in conduit. Plus it is super hard to pull in.
 
  #5  
Old 05-01-07, 07:41 PM
Member
Thread Starter
Join Date: May 2007
Location: Indiana
Posts: 27
yeah its not inside another jacket just four wires twisted 2-#2s 1-#4 and 1-#6
SEU MHF
so what about the rest seem right?
and im soooo confuess from reading so much on the ground and neutral being bonded or seperated in a sub panel im lost.
be four runs of wires 2 hot 1 neutral 1 ground to main panel
grounding rod outside
so i ground the subpanel to rod and bond togather ground and neutrals?
 
  #6  
Old 05-01-07, 08:05 PM
Member
Join Date: Apr 2006
Location: New Bern, NC
Posts: 1,623
Run a single 6 not in metal conduit to the ground rod.

Keep the grounds and neutral seperate at the sub panel. Remove any pre installed tie bar. Put the neutral on the bar that becomes isolated from the enclosure. Put the ground on the buss that is still tied to the enclosure.

If your source is a main panel, ground and neutral can be on the same buss there.
 
  #7  
Old 05-02-07, 04:36 AM
Member
Thread Starter
Join Date: May 2007
Location: Indiana
Posts: 27
Talking

ok so now i gotta still get a grounding bar for panel it didn't come with it. neutral bar is there already and is isolated. i belive i got all my little duckies lined up now. thanks to u guys!
ooh...one more thing anybody wanna come dig the trench
and my dad is telling me to go ahead a lay the pvc water line in the trench with the wire???? thats not right is it?
 
  #8  
Old 05-02-07, 03:54 PM
Forum Topic Moderator
Join Date: Feb 2005
Location: Near Lansing, Michigan
Posts: 10,537
Speedy,

The 2-2-4-6 USE MHF is Underground Mobile Home Feeder. It's quite different from standard USE. The neutral and ground are sized for dwelling feeders and the conductors have RHW-2 insulation instead of the XHHW-2 or THWN-2 in typical USE. Also, it has four insulated conductors twisted instead of a PVC jacket with insulated hots, neutral and bare concentric ground.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes