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- Newsgroups: sci.electronics
- Path: sparky!uunet!gatech!usenet.ins.cwru.edu!neoucom.edu!wtm
- From: wtm@uhura.neoucom.edu (Bill Mayhew)
- Subject: Re: 110/220 V AC why ?
- Message-ID: <1993Jan05.134551.23468@uhura.neoucom.edu>
- Organization: Northeastern Ohio Universities College of Medicine
- References: <gate.i8JPwB1w165w@toz.buffalo.ny.us>
- Date: Tue, 05 Jan 1993 13:45:51 GMT
- Lines: 23
-
- The choice of 117 VAC RMS nominal in the US is more of a political
- choice than a choice of technical merit. In the early days of
- development of power distribution in the US, there was bitter
- rivalry between Edison, a proponent of of DC generation and
- distribution, and Westinghouse, an AC generation proponent. Edison's
- company spread fear stories about the supposed inherent danger of
- AC current versus DC.
-
- Of course, it makes sense to keep the voltage in the distribution
- system at as high a potential as possible to reduce energy losses
- to resistive heating in the wire. Note that out-of-phase current
- may deliver no power to the load, but does cause heating loss in
- the wire carring the current. Energy loss is greater for low
- voltage distribution systems.
-
- Re: the previous posting: a lower AWG number on wire denotes a
- larger corss sectional area.
-
-
- --
- Bill Mayhew NEOUCOM Computer Services Department
- Rootstown, OH 44272-9995 USA phone: 216-325-2511
- wtm@uhura.neoucom.edu (140.220.1.1) 146.580: N8WED
-