SoCal Calyx
Active Member
I have some solid experience with 120/240v single phase electrical, but not much experience with 3 phase. I'm hoping some of you with more experience might be able to help clear things up for me in this area.
I'm setting up a small grow in a commercial space. The area is fed by 3 phase power, so before I buy all new ballasts, A/C, etc I want to make sure I'm on the right track. I'll be installing a small sub panel (50 amps) in the grow room that will be fed from two of the legs in the main panel. Using my multimeter, I'm seeing 208v across any two of the three legs and from any one of the legs to neutral I'm getting 120v (as expected).
Like I said, I'm pretty ignorant to 3 phase power. When does one have 3 phase power from this panel? Is it only when all three legs are involved? I'm assuming if only one leg is used along with neutral it's single phase 120v. If only two legs are used (208v) is this single or 3 phase?
I'm setting up a small grow in a commercial space. The area is fed by 3 phase power, so before I buy all new ballasts, A/C, etc I want to make sure I'm on the right track. I'll be installing a small sub panel (50 amps) in the grow room that will be fed from two of the legs in the main panel. Using my multimeter, I'm seeing 208v across any two of the three legs and from any one of the legs to neutral I'm getting 120v (as expected).
Like I said, I'm pretty ignorant to 3 phase power. When does one have 3 phase power from this panel? Is it only when all three legs are involved? I'm assuming if only one leg is used along with neutral it's single phase 120v. If only two legs are used (208v) is this single or 3 phase?
