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∙ 14y agoAny two legs of a three phase system are classed as single phase. If a 208 volt device is connected across two legs of a 240 volt system its current draw will be higher. It is not recommended to connect a 208 volt device to a 240 volt supply. Using a constant resistive load of 6000 watts for an example, the resistance of the unit at 208 volts has to be found. R = E (squared)/W = 7.21 ohms. Now using the formula to find amperage at this resistance I = E/R, 208/7.21 = 28.84 amp at 208 volts. If the 208 volt device is connected to a 240 volt supply the following condition happens. I = E/R, 240/7.21 = 33.29 amps. The device in now definitely overloaded and instead of its rated 6000 watts it is outputting W = A x V, 33.29 x 240 = 7989 watts almost 2000 watts more than the unit is rated at.
Using a 240 volt rated device on 208 volts is more forgiving and is done quite often. Using the same 6000 watts on 240 volts the resistance is calculated to be R = E (squared)/W = 9.6 ohms. If the 240 volt device is connected to a 208 volt supply the following condition happens. I = E/R, 208/9.6 = 21.67 amps. To check this connection's wattage W = A x V, 21.67 x 208 = 4507 watts or about 1500 watts below its rated output at 240 volts.
If the connected load is a constant wattage like a motor, the amperage and voltage will change to maintain the constant wattage. I = W/E. A motor rated at 6000 watts at 240 volts will draw 25 amps. A motor rated at 6000 watts at 208 volts will draw 28.8 amps.
The CEC states that if a 208 volt rated motor is connected to a 240 volt supply its full load current has to be increased by 10 % for its overload protection.
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If the three phase source is delta connected, and the neutral/ground is at the center tap of one of the phase windings, then there is 208 volts available from neutral to the third phase leg. In this case, there would be no mismatch of voltage, and the 208 volt load will operate as designed.
This particular configuration is not so common. It is sometimes used in a light industrial setting where a fourth transformer for the 120/240 split phase portion is not used - it provides 240 three phase delta only, 120/240 split single phase, residential style, and 208 single phase.
See related links below (High Leg Delta)
Note that 240 three phase loads are also not so common. In the case where 480 three phase is required in this configuration, then there is a step up transformer trio provided, ususally by the customer.
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∙ 14y agoNo, it is not possible to directly connect a unit designed for 208V single phase to a 240V 3-phase system. The voltage difference, phase difference, and wiring configurations are not compatible. It is important to match the voltage and phase requirements of the equipment for safe and proper operation.
Wiki User
∙ 11y agoA 240 volt range can operate on 208 volts but the range's wattage will be reduced. There are manufactures now making ranges that operate off of 208 volts. This has come about from the fact that apartment buildings are now supplied from 120/208 three phase supply services.
Wiki User
∙ 12y agoIt should operate with no problems, most ranges are rated for operating on both voltages. Check the label.
To hook up a 10 hp compressor to a 3-phase power supply, connect the three hot wires from the power supply to the terminals L1, L2, and L3 on the compressor's motor starter. Connect the neutral wire (if required) to the N terminal. Lastly, connect the ground wire to the ground terminal. It's advisable to consult a professional electrician or the compressor's manual for specific instructions.
No, 220 amp circuit breakers are typically reserved for three-phase systems. For a single-phase system, common amperage ratings include 15, 20, or 30 amps. If you need a higher amperage, you may need to install a subpanel with multiple lower-rated circuit breakers instead.
It is generally not recommended to connect a 208 volt power source to a motor that is rated for 230 volts. This could lead to the motor operating at lower efficiency or not working properly. It is best to use the voltage specified by the manufacturer to avoid damage or safety hazards.
A 240 volt hook up provides more power compared to a 110 volt hook up, which means it can support larger appliances or equipment that require higher energy consumption. 240 volts is commonly used for larger household appliances such as stoves, dryers, or water heaters, while 110 volts is typical for smaller household electronics and devices. Make sure to use the appropriate voltage for your specific appliances to avoid damage.
It is not recommended to run a 3-phase motor on a residential single-phase electrical supply as it may damage the motor or cause it to run inefficiently. The best option would be to use a phase converter to convert the single-phase residential supply to three-phase power for the compressor. Consulting with a qualified electrician is advised to ensure proper installation and operation.
You can hook up an infinitive number of 12 volt batteries in a parallel circuit and still have 12 volts.
Preferably with a multimeter. For amps you hook it up in series, for volts you hook it up in parallell. For Ohms, you'll need to have the item you want to measure separated fron the circuit.
Preferably with a multimeter. For amps you hook it up in series, for volts you hook it up in parallell. For Ohms, you'll need to have the item you want to measure separated fron the circuit.
As long as it's 12 volts and it will hook up it will do fine.
it is best to use an H or I size hook
To hook up a 10 hp compressor to a 3-phase power supply, connect the three hot wires from the power supply to the terminals L1, L2, and L3 on the compressor's motor starter. Connect the neutral wire (if required) to the N terminal. Lastly, connect the ground wire to the ground terminal. It's advisable to consult a professional electrician or the compressor's manual for specific instructions.
Easy as one,two and three. There are four primary wires coming from you service panel.(provided you have three phase service) you can check by looking at the weather head on the roof. if it has three wires you have single phase but if it has four then you have three phase. the hot wires will be black,red and brown. the neutral will be white or green. the welder should have a manual that will give you the lead phase wire(most likely black to black) the other two hot wires can hook to any other hot wire. The neutral goes to the white or green and posts to the panel. If the welder has a switching power supply then you must have a three phase converter.
Not in any way that is easy. Just get a step up transformer from 220 to 440 Volts. Your current will be reduced by about 1/2.
It's exactly how it sounds. After starting the next row, put your hook in the chain of the next single crochet stitch, yarn over the hook and draw the hook through the loops. If you're still stuck there are some good instructional videos on you tube.
Phone lines operate at 48 volts when you pick the phone up to make a call and while talking, but 90 volts are sent to the phone you are calling to make the phone ring. This is a holdover from the old rotary phones that had the bells that were struck by a little hammer.
You hook them in parallel pos to pos and neg to neg.
You need an ac-dc converter to reduce your house voltage to 12 volts