Ryan Slaback
Aluminum
- Joined
- Mar 13, 2007
- Location
- Menomonie WI
I teach metals among other things in a high school. We are desperately running out of floor space in the shop itself. I have 5 220v single phase machines on rollers (1 plasma, 1 Tig, 3 mig) and only room enough inside to operate maybe 3 of them at once.
Last summer I had a 16' x 40' pad of concrete poured adjacent to the shop on which my auto class can work allowing us room for more vehicles. I want to utilize this space to also allow some of the students to work on the metals fabrication projects (everything from speaker stands to trailer frames) as well. Ideally the kids would roll whatever machine they need outside, use it for the hour then roll it back.
The plan is to run 2 lines out the side of the building, each one with a disconnect switch inside. The switches will be deenergized at all times other than during use. They will be locked off and the kids will have to check out a key to use them.
I am looking for any advice anyone has on weatherproof 220v 30 amp enclosures. Has anyone done this before? Also, the plan is for the metals students and I to run the conduit and possibly pull the wire, having the electrician only come in to make the connections on both sides. I am thinking that #8 wire should be fine for a 220v 30 amp circuit (each one is about 100' from the box). If I need to run a ground (which I think I do) how big of conduit would I need for 4 #8's?
Any advice would be appreciated. I know that advice item #1 is talk to the electrician and that is in the plan, however I would like to be as educated on the subject as possible before hand. He's not exactly the easiest guy to work with.
Last summer I had a 16' x 40' pad of concrete poured adjacent to the shop on which my auto class can work allowing us room for more vehicles. I want to utilize this space to also allow some of the students to work on the metals fabrication projects (everything from speaker stands to trailer frames) as well. Ideally the kids would roll whatever machine they need outside, use it for the hour then roll it back.
The plan is to run 2 lines out the side of the building, each one with a disconnect switch inside. The switches will be deenergized at all times other than during use. They will be locked off and the kids will have to check out a key to use them.
I am looking for any advice anyone has on weatherproof 220v 30 amp enclosures. Has anyone done this before? Also, the plan is for the metals students and I to run the conduit and possibly pull the wire, having the electrician only come in to make the connections on both sides. I am thinking that #8 wire should be fine for a 220v 30 amp circuit (each one is about 100' from the box). If I need to run a ground (which I think I do) how big of conduit would I need for 4 #8's?
Any advice would be appreciated. I know that advice item #1 is talk to the electrician and that is in the plan, however I would like to be as educated on the subject as possible before hand. He's not exactly the easiest guy to work with.