i have a hayward pool pump.it came w/ a 220 dryer plug and is 12 amps and 1.5 hpw. can i use a 3 prong plug?
599522
what shape is this 3 pin plug?\n\nSMALL SHELL (same as ordinary household outlets)\n2 vertical and a half moon is 15 amp 120v\n2 vertical (1 with'tag') and a half moon is 20 amp 120v\n2 horizontal and a half moon is 15 amp 240v\n2 horizontal (1 with'tag')and a half moon is 20 amp 240 v\n\nLARGE SHELL\n2 vertical 1 'L' and half moon is 30 amp 120/240 v\n3 vertical and half moon is 50 amp 120,240 v\n2 horizontal and a half moon is 30 amp 240v\n2 vertical and a half moon is 50 amp 240v\n\nand you cannot connect a 120 volt device to 240 and vice versa
492458
I seriously doubt you have a 50 HP motor!  That is industrial size, and I wouldn't expect a question like that here.\n\nWhat voltage?  A 3-phase 50HP 230V motor is 130 amps!  There is no single-phase motor that big.  If you really have this, get an electrician to install it.
679718
The deciding factor here would be the Utility Company Service Entrance. THAT cannot be rewired by you! The other two points ( Low side of transformer and Motor Windings) can easily be configured either way by simply rewiring the 3 windings on the motor, and the 3 windings on the output of the transformer.\n\nOptimum efficiency will be DELTA-DELTA-DELTA or STAR-STAR-STAR...Either way no 'ground loops' to cause loss.
424406
I would get a 500 watt inverter to have some safety, you figure with volts times amps but if it uses a motor the starting current can be 5 times the running amps.
550835
The motor is designed for 415V 3ph which produces a magnetic flux which in-turn provides torque and horse power. By reducing the voltage you reduce the capability of the motor, or reduce the horse power. \n\nTo have an equilvalent HP motor at 240V 3ph you essentially must rewire the stator and armature windings.\n\nWhat you can do is use a Auto-transformer and step up the 240V 3ph to get 415V 3ph out. But the ampacity is reduced, Power in = Power out (watts). This may be sufficient for your needs.
178605
In motor control normally you would use wye to delta. This is done' to start a motor. I wye the motor has less torque so the motor draws less amps at start up. Then it is switch to delta to obtain full power. This is done on large 3 phase motors and is becoming less common as 3 phase solid state devices are becoming less expensive.\n\nUnles you are talking power distribution. In that case wye and delta are just how the transformer is configured. In this case the primary of the transformer would be Delta and and the secondary would be delta. This allows for 208/120 volt or 480/277. This is comonly done. So it really matters witch field of electrical you are talking about. Motors? Power distribution? Other?\n\nTypically anything with wye delta is refering to 3 phase power.\n\nWith a little more information on the question I amy be able to give you a better answer
158725
PS--just to add a bit of info, a commercial radio or TV system will be running on 480 VAC three phase or higher (577 for example).  When you talk about three phase power, the current is divided amongst three wires, so 100 KW is not such a big deal anymore.  The older AM stations will all be running anode voltages of a couple of KV or more, so the power supply has no problem having high voltage on the input.\n\nTo supply a 100,000 Watts, a 480V AC system will send about 69 1/2 Amps per phase into the load.  A 480V 3phase system rated at 200 Amps/phase can supply 288,000 Watts continuously (which for you motor heads converts to 386 1/2 electrical Horsepower).
579021
I think you meant WATTS versus volts. You will need to inspect your power supply for that information.\n You need to check out he following website, for more info on what you will truly need 250W sounds a bit low by today's standards - http://www.jscustompcs.com/power_supply/
717825
if It is A/C Single Phase,Assume V=230,\n10 KVA= 10* 1000* V*A\n       P = V * I * 0.8 ( Power factor)\n       10000 = 230 * 0.8 * I\n          \n             Amps I = 54 A ( For single Phase)\n\nFor Three Phase V= 420 V.\n\nFor DC Supply Neglet the Power Factor
966091
probably the fact that it is made for the usa market and the power rateing is 0nly 120volt not 240 like ours,so if u get it and plug into the mains u will burn it out so u have wasted ur money,try european markets but stress u need for uk
121770
The ground conductor is a safety feature ...\n\nMost people plug a device into an AC outlet without everthinking about how it works. Most of the time, everything works fine and no problems are experienced. However, there are a few things that are helpful to know about AC power as far as disc jockeys are concerned.\n\nThe "power" that is supplied by a typical wall socket is 120 volts AC (often written as VAC). AC is an abbreviation for alternating current. In addition, some outlets are wired for 240 VAC (these are typically used for devices requiring a large amount of power, such as electric ranges, dryers, etc.). Devices requiring 240 VAC power have different plugs as compared with devices intended for "standard" household outlets.\n\nThere are two common types of power, single phase and three phase. Most disc jockeys will never have to deal with three phase power directly. There is virtually no equipment that a DJ will ever have to use that requires three phase power, as it is used only where very large amounts of power are required. Three phase power will be briefly discussed below. Since the vast majority of equipment that a mobile DJ uses runs off of standard 120 VAC, it will be the focus of these discussions.\n\nAll power outlets have a current rating, the most common ones being 15 amperes and 20 amperes (amperes is almost always abbreviated to amps). The amp rating of an outlet specifies the maximum amount of current that may be drawn from the outlet without tripping a circuit breaker (or, in older systems, blowing a fuse). The primary reason for circuit breakers and fuses is to limit the amount of current that may bedrawn. If too much current is drawn through a wire, overheating of the conductors may occur, leading to a possible fire.\n\nThe amount of power that may be safely drawn from an outlet is the product of the voltage and the current rating, and the units are watts. For 15 and 20 amp circuits (assuming 120 VAC), the power ratings are 1800 and 2400 watts, respectively. The total power draw of the devices connected to an outlet should not exceed these values (or else the circuit breaker may trip). \n\nWhat are the three "prongs" for?\nYou may have noticed that many appliances, tools and most pieces of professional audio gear have a cord with 3 prongs on the plug. The power outlet of course has 3 corresponding female receptacles (unless it is an older type,which has only two slots).\n\nThe longest, often rounded prong is the ground conductor; the primary purpose for this conductor is for safety. There is also a hot conductor, and a neutral (or sometimes called return) conductor. On a wall outlet, the wide slot is connected to the neutral conductor, and the narrow slot is connected to the hot conductor (the ground conductor is connected to the "half round"hole). On some cords with a ground prong, the hot and neutral prongs are often the same width. Most 2-prong cords today are polarized; one prong is wider than the other (allowing it to be plugged in only one way). You should never defeat polarized cords, they are made that way for a reason! Also, note that in 120 VAC wiring, the black wire is the hot wire! (often, black is used for ground in DC electronics). The hot and neutral conductors are the ones that actually carry the power to and from the device of interest.\n\nThe hot conductor is so called because it is the conductor that actually has the voltage on it. The hot conductor has 120 VAC on itwith respect to the neutral conductor. The voltage on the hot conductor is of nopractical use without the neutral conductor, because for useful work to be done current must flow through a device; the neutral conductor provides the path to complete the circuit. Ever wonder why birds can sit on power lines (at thousands of volts) without getting shocked? Despite the high voltage on the line, no current flows through the bird since there is no return path conductor. The reason for elec
1063180
first...identify the power source (AC or DC)\nthen...isolate the power source (lockout)\nnext...verify the circuit is not live (test)\n\nfinally...if it is AC three phase reverse any two of the three motor leads, if it is DC just reverse the two leads (if shouldn't be DC)\n\nif it is a european piece of equipment the wires should be black-black-brown, swap the blacks\n\notherwise, it should be brown-orange-yellow or black-red-white\n\nDO NOT ATTEMPT IF YOU ARE NOT QUALIFIED\n\ngood luck
807450
For a wye-connected machine:\nThe phase voltage (measured between a-b, b-c, or a-c) is (SQRT(3))* the line voltage (a-n, b-n, or c-n). In this case, connect your invertor across a-n, b-n, c-n (this may mean breaking the "common" neutral connection).\n\nFor a delta-connected machine:\nThe phase voltage equals the line voltage. In this case, connect your invertor across a-b, b-c, and a-c.\n\nWhich polarity you choose for the three connections will determine rotation - make sure your resultant rotation matches that on the machine nameplate, or you'll likely burn it up due to insufficient cooling...
961904
You will need an adapter.\nhttp://en.wikipedia.org/wiki/List_of_countries_with_mains_power_plugs,_voltages_and_frequencies
126697
U have the best answer from howstuffworks.com. \nAbout the circuit it’s better buy a cheep hair dryer from the market and disassemble it,  have look at it. For the exact description of the hair dryer and it inner circuit’s values  \nCircuit on the PCB board may also depend on the manufacture also \n\n\nIn general i t contains an AC power code which is attached to a  switch for switching it ON and OFF and also contains a  capacitor and transistors to step down the AC power of 220V or 110 V to the capacity of the motor and the heating coil, so the can be shared by the heating coil in front and the motor placed at the back of hair dryer…
129261
Kilowatts  Equations\nDirect Current  =        I x E/1000\nAC / 1phase 115v or 120v =I x E x PF/1000\nAC / 1phase 208,230, or 240v= I x E x PF/1000\nAC 3 phase All Voltages     =    I x E x 1.73/1000\n\nE = Voltage \nI = Amps \nPF = Power Factor
333276
This is a little too complex a question for free answers.  But:\n\nLower NUMBERS in gauge correspond to larger AREA of the wire cross section.  The larger the area, the more amerage can be safely carried by the wire.  Voltage is not really an issue at common household voltages, as most modern wire is rated to 600V and household doesn't exceed 220V.\n\nIn-wall wiring is solid copper.  You will generally match the wire gauge to the circuit breaker size as follows:\n\n14 gauge = 15 amp breaker (15 amp max)\n12 gauge = 20 amp breaker\n10 gauge = 30 amp breaker\n\nThe use of watts is misleading; it's AMPS that matter.  But watts * volts = amps, so you can deduce amerage from reading the wattage value, and knowing the current in your home.  The in-wall wiring specs are not generally limited by wire LENGTH, at least not in the way extension cords are.\n\nExtension cords, unlike in-wall wire, are not solid copper.   However, they're also less likely to burn down your house.  They are rated by wire lngth and gauge.\n\nYou can use the links I've provided here to see required gauge sizes.  Most indoor space heaters are 1500 watts (about 12 amps) though  some are 1750 amps.