The garage is attached. I believe the main panel is 200 amp. Sub panel is in basement. Last fall, with the help of many folks on this forum, I ran a 240v circuit on 50 amp breaker to the garage. This was done as follows. I ran 50 feet of 6/3 romex through floor joists in basement ceiling. Since I had about 10 feet extra I just made a loop in the joist space just before punching through the garage wall. There I had a j box and ran approx 35 feet of each of 6 gauge x 2 and 8 gauge x1 across the wall, then up the wall the across the ceiling then down a post to a 50 amp leviton switch then from there to 6-50 receptacle. All has been working out well. I now want another 240v 30amp receptacle on the same post.
Plan: I will put a a smaller 8 slot sub panel on this post. I might also like to add a 120v outlet here. So the plan is 1 120v circuit 15amp, 1 30 amp 240v circuit and 1 50 amp 240v circuit. So i need to run a neutral from the j box and tie into the 6/3 Rolex there.
Can I place a 70 amp breaker in the basement subpanel to feed this garage subpanel?
If that won't work I could easily ditch the 120v circuit in the garage leaving me with a 30 amp and 50 amp circuit. The 50 amp currently powers my 80 gal Quincy compressor. I will use this receptacle at a later time for a mig welder. The 30 amp circuit will power a 3hp 3phase motor with ac drive/vfd that will run a belt grinder. This Baldor motor is 8.4 amps on 240v. If I pass on the 120v outlet, do I still need to run a neutral to the sub panel since there will only be 2 240v circuits?
So is this plan doable? Any suggestions would be helpful and very much appreciated. Thanks in advance for the help.
Plan: I will put a a smaller 8 slot sub panel on this post. I might also like to add a 120v outlet here. So the plan is 1 120v circuit 15amp, 1 30 amp 240v circuit and 1 50 amp 240v circuit. So i need to run a neutral from the j box and tie into the 6/3 Rolex there.
Can I place a 70 amp breaker in the basement subpanel to feed this garage subpanel?
If that won't work I could easily ditch the 120v circuit in the garage leaving me with a 30 amp and 50 amp circuit. The 50 amp currently powers my 80 gal Quincy compressor. I will use this receptacle at a later time for a mig welder. The 30 amp circuit will power a 3hp 3phase motor with ac drive/vfd that will run a belt grinder. This Baldor motor is 8.4 amps on 240v. If I pass on the 120v outlet, do I still need to run a neutral to the sub panel since there will only be 2 240v circuits?
So is this plan doable? Any suggestions would be helpful and very much appreciated. Thanks in advance for the help.