What is this in laymans terms?

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Besoeker said:
GoldDigger said:
The standard usage is
120/240 single phase three-wire.

Which is not what Charlie B posted:

and that's what I was questioning - regardless of what it gets called.
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Charlie is arguing (I think) that "120 volt three wire" is a reference to 120-0 plus ground, and therefore for consistency 120/240 (120-0-120) should be referred to as four-wire.
I disagree with his premise and therefore reject his conclusion.
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Looks like split-phase to me.

Never, never, never, never, never use Auto-correct. The mistakes you get are worse than the typos. A hunam being can still undrestand a typo, but Auto-correct detroys the meaning.
 
JoeStillman said:
Looks like split-phase to me.

Never, never, never, never, never use Auto-correct. The mistakes you get are worse than the typos. A hunam being can still undrestand a typo, but Auto-correct detroys the meaning.
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Back in the dawn of email, a version of the software I was running at work had autocorrect that I couldn't figure out how to turn off. It always "corrected" the name of an esteemed coworker of mine (whose actual name I cannot remember at the moment) to "Moron".
 
Besoeker said:
It's much better than it used to be.
A few years ago I was puting together a proposal for electrical kit at a water pumping station.
One part of it referred ta borehole pumpset. Word didn't like that. It offered brothel site as a correction.......
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I prefer a spell checker that indicates misspelled words but doesn't automatically change them, for the many reasons people have shared with us.
 
qcroanoke said:
"120 volt single phase 3-wire balanced 120/240 volt 200 Amp Electrical Spooner".
I have no idea what spooner has to do with it.
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I'm thinking that this is referring to Article 647 (in the 2008). Sensitive Electronic Equipment. This sounds like an IT or audiovisual type job. Maybe they're asking for a isolation transfomer off the 120/240 V system to derive the 60-0-60 balanced power system.

This paper might help: http://www.audiosystemsgroup.com/SurgeXPowerGround.pdf
See page 19.

I see the "roanoke" in your ID. Roanoke, VA?
 
kwired said:
I prefer a spell checker that indicates misspelled words but doesn't automatically change them, for the many reasons people have shared with us.
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I agree.
Being part of a multi-national corporation, we get both US and UK English.
Choosing the appropriate version depends on who you are communicating with.
 
ggunn said:
Beautiful place. I was there a month or so ago. Green mountains all around, and much cooler than Texas. :D
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Thanks! I have been to Houston in April and if it gets hotter than it was when I was there it's too hot for me.
 
charlie b said:
My problem was with their calling for 120 volt single phase 3-wire, which I took to mean Hot, Neutral Ground, and then calling for 120/240 volts. It was inconsistent. I don't mind using the notation of 120/208V, three phase, 4-wire plus ground, or calling it 5-wire. But just be clear and consistent.
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In the entertainment industry, we HAVE to specify 4-wire or 5-wire when calling out our three-phase tie-ins. Loads such as chain hoists don't need a neutral, but the lighting dimmers most definitely do. The services have the neutral at the disconnect, but the stagehands don't like having to lug around doubled up 4/0 for a neutral run if they don't have to. ;)



SceneryDriver
 
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