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-   -   is it 110 or 220 (http://www.diychatroom.com/f18/110-220-a-171564/)

she777 02-10-2013 10:55 AM

is it 110 or 220
 
I have a machine i ordered from china the cord has 3 prongs and 10a 250v wrote on it.is it 110 or 220?

brric 02-10-2013 11:03 AM

Does the cord cap have a NEMA # ? It's probably 240 volts.

Stubbie 02-10-2013 11:06 AM

Quote:

Originally Posted by she777 (Post 1113942)
I have a machine i ordered from china the cord has 3 prongs and 10a 250v wrote on it.is it 110 or 220?

In the USA we have single phase 240 volts over two hot conductors accompanied with a non current carrying ground. This may be what you ordered. The plug is 250 volt rated so it is not a 110 volt plug or it would say so

What is it?

Thing to be careful about is that it is for use in the USA as 250 volts in many places in the world comes over one current carrying conductor and a grounded leg or neutral .. plus a ground .. it is also a 3 prong plug.

TarheelTerp 02-10-2013 11:36 AM

Quote:

Originally Posted by she777 (Post 1113942)
I have a machine i ordered from china the cord has 3 prongs and 10a 250v wrote on it.is it 110 or 220?

post a photo of the plug and the "rating plate" on the machine

redman88 02-10-2013 12:02 PM

there might also be a wireing diagram plate, if there is a pic of that would help as well.

AllanJ 02-10-2013 12:09 PM

Even though most household equipment sold in China is 220 (240?) volt, you should not simply go by the rating of 250 volts stamped on the power plug (cord cap).

You must find out more about the machine. The voltage stamped on the name plate is good enough to rely on.

JohnnyB60 02-10-2013 02:28 PM

Well here in the US you cannot plug rated plug into anything else other than the same rated receptacle. There are different Amperage plugs and the amperage rating has to also match. It could be 20Amp 2-wire or 3-wire with ground or 30 or 50 amp with 2-wire or 3-wire with ground which would be designated buy the NEMA rating

Do not worry about 220, 240, 230 or 250V because it all the same. Manufactures have to overrate the plug to accommodate different areas of the country and the incoming Voltage could be anything. The only cause for concern is when it says 208V because that is probably 3 phase.

I’m pretty sure its 220 and definitely not 110V

brric 02-10-2013 06:14 PM

Quote:

Originally Posted by JohnnyB60 (Post 1114153)
Well here in the US you cannot plug rated plug into anything else other than the same rated receptacle. There are different Amperage plugs and the amperage rating has to also match. It could be 20Amp 2-wire or 3-wire with ground or 30 or 50 amp with 2-wire or 3-wire with ground which would be designated buy the NEMA rating

Do not worry about 220, 240, 230 or 250V because it all the same. Manufactures have to overrate the plug to accommodate different areas of the country and the incoming Voltage could be anything. The only cause for concern is when it says 208V because that is probably 3 phase.

Iím pretty sure its 220 and definitely not 110V

I can easily insert a 15 amp 125 volt plug into a 20 amp 125 volt receptacle.

JohnnyB60 02-10-2013 06:29 PM

Quote:

Originally Posted by brric (Post 1114373)
I can easily insert a 15 amp 125 volt plug into a 20 amp 125 volt receptacle.

Yes you can but you can not insert a 20 amp plug into a 15 amp receptacle. It is allowed to plug a 15amp in a 20 amp circuit as long as its the same voltage range.

Well you got there but that wasn't the question. We were talking about the difference between 110V and 220V. You will not be able to plug ANY 110V, 115V, or 120V INTO a 210V, 220V, or 240V :)

Anti-wingnut 02-10-2013 06:40 PM

Quote:

Originally Posted by Stubbie (Post 1113952)
Thing to be careful about is that it is for use in the USA as 250 volts in many places in the world comes over one current carrying conductor and a grounded leg or neutral .. plus a ground .. it is also a 3 prong plug.

Voltage is voltage whether it is between two hot poles or hot and ground

jlmran 02-10-2013 06:49 PM

Quote:

Originally Posted by Anti-wingnut

Voltage is voltage whether it is between two hot poles or hot and ground

But a 240 volt single pole circuit and a 240 volt double pole circuit are each intended for specific equipment/devices.

Anti-wingnut 02-10-2013 07:00 PM

Whats a single pole circuit?

240v hot to ground(ed) looks the same as our standard (US) hot to hot when viewed on an oscilliscope.

Items made specifically for North America will be built for a 240 hot to hot circuit, but other items built with a 240v hot to ground circuit (EU) can still be safely used.

One can also use a single phase of a 240v three-phase system.

JohnnyB60 02-10-2013 07:04 PM

Quote:

Originally Posted by jlmran (Post 1114402)
But a 240 volt single pole circuit and a 240 volt double pole circuit are each intended for specific equipment/devices.

I don’t know what you are talking about by 240 volt double pole circuit. Double pole usually means opening both sides such as a contractor or rely. I think you're maybe referring to a 3 wire circuit where you have two lines with 240 volts between them and a neutral wire for 120V.

Anti-wingnut 02-10-2013 07:06 PM

All circuits except three-phase and short circuits require two poles.

joed 02-10-2013 07:07 PM

Quote:

Originally Posted by Anti-wingnut (Post 1114392)
Voltage is voltage whether it is between two hot poles or hot and ground

Yes but if plug a 240 hot to ground device into a 240 hot to hot device then you may have just applied 120 volts relative to ground onto the metal framing of the device.


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