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Mr. Luddite Mr. Luddite is offline
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First recorded activity by BoatBanter: Aug 2013
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Default ??? upgrading shore power to 50A 220V

On 3/24/2014 4:34 PM, wrote:
On Mon, 24 Mar 2014 15:41:13 -0400, "Mr. Luddite"
wrote:

I've heard electricians refer to a residential service to your home as a
"split phase" service. I agree there is some confusion as to calling it
"two phase"


They must not have been real electricians.
The typical home service is single phase, center tapped.
Split phase is a type of motor winding and two phase is a whole
different animal altogether (5 wire with two pairs of ungrounded
conductors, 90 degrees out of phase)
The topology of two phase is like a +.



I understand and I didn't say it was accurate. However, as the other
poster pointed out there is sometimes some confusion as to what a home
service is called since you *do* have two hot legs 180 degrees out of
phase. The "split phase" isn't a reference to how a motor is wound in
this case. It's a reference to the center tapped, 240v service
producing two hot legs 180 degrees out of phase referenced to neutral.

The terminology used to describe it has been a subject of debate for years.