Not legal or practical
by BCWelling - 9/15/13 4:57 PM
In Reply to: Easy way by jbm75cine
Per the National Electric Code, it is not legal to run or put 220V in a 110V outlet and a licensed electrician will not do this. It is also not practical. A 220V wall outlet and plug has a different and specific "shape" that will not accept the normal 110V plug that comes with the equipment you are talking about. There is no such thing as an AC "splitter" that will take a house 220VAC input and give you two independent 110V voltages at the output. In the normal house there are two 110V AC lines and one 'neutral'. The two 110V lines are approximately 180 degrees out of phase. So, the voltage of each phase (relative to the neutral wire) is 110V, but the voltage between the two phase is about 220. If you look at the wiring inside a 110V outlet you will see a black wire (the 'hot' side), a white wire (neutral), and a green or bare copper wire (ground). Do not confuse the words or meaning of 'neutral' with 'ground'. If you look at the wiring in a 220V outlet you will see a black wire (phase A), a red wire (phase B), a white wire (neutral not connected to anything) and a bare or green copper wire (ground) connected to the metal junction box.
If your room or house is new construction it might be fairly easy for an electrician to run another 110V line to the room. If this is physically possible, ask the electrician to "run" the new line off another breaker or the other AC phase.
Is there only one wall plug in the room? Even if there is more than one outlet, they are likely connected to the same breaker panel switch and the breaker's rating (15 or 20 amps) is all the amperage / power the room has available. However, if the room has an outside wall, there may be hope that the wall plug located on the outside wall is run from another breaker switch. If you are this lucky, this solves your problem by allocating about half the total equipment power to each of the wall plugs.
If you have a voltmeter and an extension cord, it is fairly easy to check the phasing of the wall plugs. However, if you are not handy with the voltmeter and the probes you could get shocked doing this so I won't elaborate how to do this. With the voltmeter on AC, measure the voltage between the 'small' slots on each outlet. If the voltage is close to zero, they are on the same phase. If the voltage is close to 220V, the outlets are on different phases. Or, an easy way to determine if the room wall plugs are on the same breaker switch is to plug a light into one of the plugs. At the breaker panel, find the circuit breaker that turns the light off. Leave the breaker switch off and go back in the room and plug the light into the other wall plugs. If the light doesn't come on when plugged into the other wall plugs, they are all on the same breaker panel switch.
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