120 208 vs 120 240
120/240 issingle phase and 120/208 is 3 phase. They co-exist because single phase is most practical for residential and most small/medium commercial while 3-phase is better for anything beyond that.
People also ask
What is the difference between 120/208 and 120/240 single phase?
120/240 is single phase and 120/208 is 3 phase. They co-exist because single phase is most practical for residential and most small/medium commercial while 3-phase is better for anything beyond that. I have to install a sub panel 120/240 single phase on to a 120/208 three phase system as per instructions of my boss.
What is the difference between 208v and 120VAC?
120/208VAC means that power distribution is 3 phase with neutral connection (Y System). 120V represents voltage of each phase to neutral point and 208V represents voltage between any two phases. For balance systems, line to neutral voltage is line to line voltage divided by 1.73 (Sq. root of 3).
What is the difference between 240V and 120V?
Phase-to Phase it is always 240V, Phase to Neutral on the tapped winding is 120V, usually the A-C winding. So A-B, B-C and C-A are all 240V, A-N = 120V, C-N = 120V, B-N is not a valid voltage reference (it’s floating) but typically measures out as 208V, so it is called High Leg delta.
What is the difference between 480/277 and 120/240 and 480/240?
120/240 is usually single phase in residential . 480/277 is also 3 phase in a commercial building. You are asking some great questions and we could fill pages about it. Lets start with this.