Resisdential is typically a split-phase 240/120 which is called single phase. The residence is suppled from a center-tapped 240 VAC transformer. The CT is grounded.
Resisdential is typically a split-phase 240/120 which is called single phase. The residence is suppled from a center-tapped 240 VAC transformer. The CT is grounded.
Yea, true but our "company" moved from a 240 high leg Delta to a 208 V Y building with 480 Y available as well. We also had German power installed for a tenant. One piece of equipment required 208 V 200 A 3 phase.
That was fun. We did have to change heaters in diffusion pumps to 208 V and the Bozo's thought they knew what they were doing and wired the equipment reacquiring 50 A, 208 V, 1P 4 wire as 50 A, 208 V, 3 Wire. They also made a mess out of the cooling water. Trying to use 100 F cooling water at 10 PSI for systems that needed ground water at 60F and 60 PSI nd needed to go though a 1/4" diameter pipe. Oops.