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Post by catmandewe on May 6, 2009 1:11:12 GMT -5
110 is standard household current.
220 is 2 hot legs with a common ground, mostly used for stoves, dryers, etc.
If you just want to plug it into a standard wall outlet you need 110.
If you have a 220 circuit you can use, you will use less power.
For a lot-o I am betting you want the 110.
Tony
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rivertoyz
starting to shine!
Member since November 2008
Posts: 27
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Post by rivertoyz on May 6, 2009 2:39:52 GMT -5
Thank you Tony. I was just wondering if one would be better than the other. I ordered the 110v. ;D
Robin
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Post by johnjsgems on May 6, 2009 9:11:21 GMT -5
Unless you are talking large slab saws the 230 option is generally 230, 50 Hz for foreign countries or"export models". In the US we use 60 Hz so it wouldn't work here (with a few rare exceptions).
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Post by johnjsgems on May 6, 2009 9:15:33 GMT -5
By the way, a dual voltage motor that draws 10 amps on 115V will draw 5 amps on 230V but it is 5 amps on each "hot leg" so pretty much the same watt usage. Most motors will run more efficiently on 230 so there is a slight advantage.
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docharber
has rocks in the head
Member since October 2008
Posts: 716
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Post by docharber on May 6, 2009 15:06:54 GMT -5
John said it. The wattage is the amount of energy consumed. Volts times amps equals watts. On 230V, half the amps are needed to deliver the same amount of energy to an electric motor, which will draw only the energy it needs to handle its load. If you run lower amperage by increasing voltage, the motor will run cooler and more efficiently. That's why big motors are usually 230V. You can increase efficiency further using direct current and multiphase power. For small devices, 120V is fine. About hertz - if you run a 60 Hz motor on 50 Hz current it will generally run OK, jyst a loittle slower. That's important for mechanical timers, etc. but we lived in the UK with our own electricals plugged into transformers with 50 Hz output. No problems for the Fridge and washer. Our electronics worked oK, too. The TV and VCR were multiband and could use different current.
Mark H.
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