Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ncar!boulder!sunybcs!oswego!penelope.oswego.edu!vermilye
From: vermilye@penelope.oswego.edu (Jon R. Vermilye)
Newsgroups: sci.electronics
Subject: Re: 220 vs. 110 motor efficiency
Keywords: power
Message-ID: <1173@oswego.Oswego.EDU>
Date: 4 Apr 89 02:54:12 GMT
References: <3272@ihlpm.ATT.COM>
Sender: news@oswego.Oswego.EDU
Reply-To: vermilye@penelope.oswego.edu (Jon R. Vermilye)
Organization: SUNY, College at Oswego
Lines: 24

In article <3272@ihlpm.ATT.COM> wrv@ihlpm.ATT.COM (Vogel) writes:
>Over the weekend I had a conversation with the local pool supply
>company service person.  We got on the subject of pumps, and he asked
>me if my pump was ok, and how it was connected.  I told him it was connected
>to 110V (by previous owner), but it could also run at 220.  He said I
>should convert it, that this would give a great savings in the power bill.
>So somebody please tell me, is the pool guy whacko, or am I missing
>something?
>	-Bill [waiting for summer so I can swim......] Vogel, ihlpm!wrv
He is probably right.  The current will be lower for the same amount
of power at the higher voltage.  This means that you will have less 
loss due to the resistance of the wire.  This is why power it usually 
transamitted at high voltage/low current.  If your wire length is long,
you probably would have some savings both in the wire, and the internal 
wiring of the motor.  It the run is short, it won't make much difference.
Generally, it is best to run motors and other appliances at the highest
voltage available.

JRV

Jon R. Vermilye                          		         315 341 2138
Department of Theatre                              vermilye@oswego.Oswego.EDU
SUNY Oswego                                   rutgers!sunybcs!oswego!vermilye
Oswego, NY 13126