Weird issue running electric to new garage

[Dmartin3]

So I’m trying to plan out how to run electric to my garage and I’ve encountered an issue. My original plan was to run 2224mhf through conduit underground from garage to house, use a LB fitting and go through the rim board into the crawl space about 20’ and then bring it up through the wall stud straight into the bottom of the breaker panel. I was planning on using an 80a breaker off the main panel and feed a 100a box in the garage.

The problem I have here is that the walls are studded with 2x4’s in the house. I think I’m gonna have to run a minimum of 1 1/2” conduit, which will be too big to put through a 2x4 if I’m understanding things correctly. Is there an obvious way around this issue?

 

[alfredeneuman]

If I'm reading this right you just need to drill 1 hole through the bottom plate?
Drill your hole through the plate, and put nail protection plates on both sides of the hole.
1-1/2" .....Plumbers do it all of the time.

 

[Norcal]

If I'm reading this right you just need to drill 1 hole through the bottom plate?
Drill your hole through the plate, and put nail protection plates on both sides of the hole.
1-1/2" .....Plumbers do it all of the time.

Same with 2", done all the time.

 

[welder4956]

Sounds like you are confusing the rules for drilling through floor joists. A floor plate does not fall under the rules for a floor joist and you can drill whatever size hole you need.

 

[Innovate1]

Sounds like this is just an addition and you may not have the walls open for nail plates. If it's an exterior wall then putting on the outer one would be a real pain. If the wall is open you could take some small pieces of thin steel plate and force them between the plate and sheathing on both sides. Or drill the hole a little oversize so you can slip a short section of steel tube over the conduit in the area of the plate. I would guess a lot of people don't worry too much about nail plates when adding conduit to an existing building like this but technically I think it is required by code. Others here with more experience will probably confirm or correct me on that.

As far as drilling the plate others are correct - there is basically no restriction on this. Large holes for plumbing and electrical in the plates are done all the time. Some may take up the whole width. Had to do 4" drain pipe in the shop half bath so made the interior wall 2 x 6. Still had only a sliver left on each side at the hole. Think that was because there was a fitting hub for an offset right at the bottom plate height.

 

[Crazyjake8493]

Put a large junction box - either on the inside of the rim joist or outside in place of the LB - and transition from MHF to SER cable for the indoor portion. Then you won't need conduit indoors.

 

[brownbagg]

or come on the outside of the wall and then into the back of the box with a 90