DIY Home Improvement Forum banner
1 - 15 of 15 Posts

· Registered
Joined
·
272 Posts
Discussion Starter · #1 ·
Connecting a sub panel in an outbuilding to main service in the house, to a surface mounted 200 amp panel. So far, all the feeds from this main panel enter or exit through the top or bottom punch-out openings, whether in conduit or not. I have a 2" conduit I want to connect, but the only 2" punch-outs are on the side of the box. Is there anything that restricts where you bring in the conduit to the main panel? Thanks, and sorry if this is a really dumb question.
 

· Super Moderator
Joined
·
11,051 Posts
What size wires are you running?

You can use an LB into the side od the panel, but if you ars using 2/0 copper, or 4/0 al, it will not be fun.
Are you sure that you do not have a graduated scale of knockouts in the center of the top and bottom of the panel?
 

· Registered
Joined
·
272 Posts
Discussion Starter · #5 ·
I am running 3 #2 copper and a #8 copper ground. The conduit coming from the outbuilding is 2" diameter, and I thought it would be easier to use the 2" conduit all the way to the panel, using the LB's 300Z shows, rather than neck the conduit down. Would three #2's and an 8 even fit in a 1" conduit, much less let you pull them through?
 

· Registered
Joined
·
630 Posts
Can't say I would have thought of that. You mind if I make that the solution of last resort though? :huh:
You have to be very,very careful Dont know if i would recomend you try but if you do main off and move all other wires out of the way then when you see it getting close to going through slow down so you don't end up with the bit in the panel (I do it all the time sometimes you have no choice but i have been doing it for 15 years. I also have a nockout pounch but way to much money for a hole Maybe a rental shop would let you rent one for couple of hours
 

· Registered
Joined
·
2,294 Posts
Electricians use hole saws and punches to make whatever size hole we need.

Every panel I have seen has up to a 2.5" KO in the bottom center.

Hole saws work great up to 1 1/2". 2" is doable but slow. 2.5" just doesn't want to work. Too much surface area to cut thru.

The conduit coming from the outbuilding is 2" diameter, and I thought it would be easier to use the 2" conduit all the way to the panel,
2" diameter or 2" IPS (trade size)?

.
Would three #2's and an 8 even fit in a 1" conduit,
I don't think anyone suggested using 1"

You could run it up the side and enter with an LB but it would look like an amatuer did it
 

· Registered
Joined
·
272 Posts
Discussion Starter · #13 ·
Every panel I have seen has up to a 2.5" KO in the bottom center.
That one is taken already, and all I have left are 1" diam, though I will check again

You could run it up the side and enter with an LB but it would look like an amatuer did it
This whole house looks like an amateur did it! You should see the framing! :wink:
 
1 - 15 of 15 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top