I know similar questions to this have been asked before, but I haven't been able to figure out the answers to some of these questions.
First an explanation of the situation, the main 200 amp panel is in the two car garage (house built in mid to late 90s in the eastern US). The panel is immediately to the left when you enter the main garage door from outside. This wall is also unfinished. The back wall of the garage leads to the house and is one edge of the also unfinished basement:
The estimated run is about 45 feet or so, and the purpose of the panel is to have a small wood/maker shop in the basement. I would like to run the cable through the unfinished wall and then add rock wool insulation and close up the wall later.
The equipment I am expecting to run:
- dust collector (harbor freight)
- shop vac
- CNC router (shapeoko 3)
- miter saw
- some LED lighting
- wall outlets (4x 20amp probably)
- air cleaner
- 3D printers (4~5)
- Laser cutter (future)
- plasma cutter (future)
I think around 60 amp should be enough for my usage as not everything will run all at the same time, especially not the things that draw the most current will be in use in parallel usually. I think a 12 spaces 125 amp panel should be more than enough for my usage well into the future.
Now based on the research that I have done so far, here are my questions:
- Is 2-2-2-4 SER cable the correct cable for this? I am hoping to protect this panel off a 60 amp breaker but would like to leave some room for growth without requiring a complete rewire.
- I am not sure if its permissible to run SER cable through the wall as even though I could add nail strips on the interior of the garage to protect it. The outside already have vinyl siding installed and I have no way to protect that side for future.
- What is the max size hole that I can put in 2x4 on the exterior wall for running such a cable? I have seen posts saying up to 40% of the width which on a 2x4 is about 1 3/8?
Eventually I would like to finish off the garage and the basement after this install, the only other thing is to run an airline for the compressor from the garage to the basement.
Please let me know your thoughts and what you would recommend or any gotchas that I should watch out for?
I plan on having this work inspected and permitted, but my county requires all electrical work to be done by a master electrician or for the home owners to pass a test on NFPA 70 before even applying for a permit. They give you the NFPA 70 code during the test, so hopefully it shouldn't be too hard.
Anyway, thanks in advance for your help and reading this whole post.