DIYbanter - View Single Post

Ralph Mowery

In article ,
says...

Do you have single-phase or two-phase electric service?
No such thing as 2 phase

There is (was). What is split phase in most of the US is mistakenly
called 2 phase by some. However there really is 2 phase.
I hop ewe don't have to go through the same old 400 postings about this.

Two-phase electrical power was an early 20th-century polyphase
alternating current electric power distribution system. Two circuits
were used, with voltage phases differing by one-quarter of a cycle, 90°.
Usually circuits used four wires, two for each phase. Less frequently,
three wires were used, with a common wire with a larger-diameter
conductor. Some early two-phase generators had two complete rotor and
field assemblies, with windings physically offset to provide two-phase
power. The generators at Niagara Falls installed in 1895 were the
largest generators in the world at that time and were two-phase
machines. Three-phase systems eventually replaced the original two-phase
power systems for power transmission and utilization. There remain few
two-phase distribution systems, with examples in Philadelphia,
Pennsylvania; many buildings in Center City are permanently wired for
two-phase[2] and Hartford, Connecticut.[3]

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus