ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Video door bell causing chime activation of coil
by gfretwell. 12/10/18 12:35 AM
Conduit fill Calculations
by gfretwell. 12/08/18 08:39 PM
Pull out fuse panel?
by Trumpy. 12/06/18 02:12 AM
Swimming Pool question
by HotLine1. 12/05/18 12:37 PM
Tingle off the water spigot
by rmiell. 11/30/18 01:03 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 27 guests, and 25 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Single phase and what you call it. #219479
07/30/18 08:18 PM
07/30/18 08:18 PM
G
gfretwell  Offline
OP
Member
Joined: Jul 2004
Posts: 9,323
Estero,Fl,usa
Does anyone else have problems when they hear people call 120/240 1p "split phase" or even "2 phase"?

Yikes it sets my teeth on edge.

The problem is even Wikipedia and a few panel manufacturers use the term split phase in their documentation.
Split phase is one way to wire a motor and there is only one phase in your household panel with 2 ungrounded conductors derived from one 240v secondary that just happens to have a grounded center tap. It is simply single phase, nothing else.

... or am I just being too pedantic?


Greg Fretwell
Work Gear for Electricians and the Trades
Re: Single phase and what you call it. [Re: gfretwell] #219480
07/31/18 05:36 PM
07/31/18 05:36 PM
T
twh  Offline
Member
Joined: Mar 2004
Posts: 947
Regina, Sask.
What do you think of the term "three-way switch?"

What bugs me is putting the question mark inside the last quotation mark.

Re: Single phase and what you call it. [Re: gfretwell] #219482
08/01/18 11:55 AM
08/01/18 11:55 AM
HotLine1  Online Content

Member
Joined: Apr 2002
Posts: 7,050
Brick, NJ USA
Greg:

Here is a link to "2 phase", courtesy of Scott35

https://www.electrical-contractor.n...&Number=148672&page=3#Post148672

It's buried in the Tech area.


John
Re: Single phase and what you call it. [Re: gfretwell] #219483
08/01/18 11:57 AM
08/01/18 11:57 AM
HotLine1  Online Content

Member
Joined: Apr 2002
Posts: 7,050
Brick, NJ USA

I saw this only once, many, many years ago as a helping hand with one of the 'old timer' ECs in Philadelphia.

It was different, and scary back then.


John
Re: Single phase and what you call it. [Re: gfretwell] #219485
08/02/18 08:18 PM
08/02/18 08:18 PM
S
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,335
Alaska
If I'm not mistaken, it was used with street cars mainly back in the day. Not sure how or it's practicality


"Live Awesome!" - Kevin Carosa
Re: Single phase and what you call it. [Re: gfretwell] #219486
08/02/18 09:17 PM
08/02/18 09:17 PM
G
gfretwell  Offline
OP
Member
Joined: Jul 2004
Posts: 9,323
Estero,Fl,usa
Maybe somewhere but I think the streetcars in DC used 600vdc, picked up with a "plow" and the return was the track.


Greg Fretwell
Re: Single phase and what you call it. [Re: gfretwell] #219487
08/03/18 01:12 PM
08/03/18 01:12 PM
HotLine1  Online Content

Member
Joined: Apr 2002
Posts: 7,050
Brick, NJ USA
I know it was not on any streetcars, it was n a house of worship in Center City. A sub-basement, way down below grade, and that made it scarier. Heck, if there was any issue, noone would have found us.


John
Re: Single phase and what you call it. [Re: gfretwell] #219616
09/11/18 08:38 PM
09/11/18 08:38 PM
B
BigB  Offline
Member
Joined: Mar 2004
Posts: 734
Tucson, AZ USA
How about "It's a two way switch" or calling a 4 gang a "four way" or when the electricity stops it's a "short" or "I need two-twenty" or "I need a 200 volt upgrade"

Re: Single phase and what you call it. [Re: gfretwell] #219617
09/12/18 04:44 AM
09/12/18 04:44 AM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,371
I found this dictionary , but it appears in need of some updating>>>


Quote
Phase.
In wave motion, oscillating motion, simple harmonic motion, or similar
periodic phenomena, the interval of time passed from the time the moving
particle moved through the middle point of its course to the instant
when the phase is to be stated


~S~

Re: Single phase and what you call it. [Re: BigB] #219749
11/07/18 01:05 AM
11/07/18 01:05 AM
A
Albert  Offline
Member
Joined: Aug 2006
Posts: 78
Falls Church, VA
Or the fact that in plumbing, an "open" valve allows flow and a "closed" valve stops it, while for electrical switches it's the opposite!

Page 1 of 2 1 2

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
TOOL_5150
TOOL_5150
Bay Area
Posts: 61
Joined: August 2007
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
252,171 Are you busy
189,160 Re: Forum
178,836 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.038s Queries: 17 (0.005s) Memory: 1.0266 MB (Peak: 1.2062 MB) Zlib enabled. Server Time: 2018-12-12 21:05:10 UTC