This high a voltage is an industrial voltage. If you are concerned about variations in the voltage call your utility supplier to get them to check it for you. They can connect a recording volt meter to the line an it gives a print out over a 24 hour period. If that is not an option call a qualified electrical contractor and ask him to take a reading for you. A voltage of 480 volts is not a voltage that the ordinary layman should be opening panels and
getting into.
A voltage of 380 volts is a three phase voltage. On a three phase four wire system, each phase leg to neutral (grounded) will give you 220 volts. This voltage is obtained by dividing the phase voltage by 1.73, as the phase legs are generated 120 degrees from each other. Square root of three is 1.73 divided into 380 equals 220 volts.
Power = volts times amps, so an appliance drawing 10 amps at a line voltage of 110 volts is consuming 1,100 watts. Keep in mind, however, that in a non purely resistive load, the phase angle of amps to volts might not be zero degrees, so the calculation becomes more complex, and depends on power factor, or phase angle.
First thing to do is check your meter against a known voltage supply and make sure that the meter is zeroed out. On analog meters the needle can be adjust to the zero point on the scale. The chances are that you are very close to the supply transformer. The voltages are high in these locations to compensate for voltage drop further down the line. Some one on the end of the line may have complained about low voltage and this is why the voltage was boosted. If there are primary taps on the transformer they can be adjusted to lower the secondary voltage output. The power company usually does not believe the customer when the say the voltage is high or low. Check your 120 volts. Request that they send out one of their representatives to check your voltage. State that light bulbs are blowing frequently and not reaching their specified life. If your 240 voltage is high, the 120 volts will also be high. -------------------------------- If all that fails to correct the problem, you can install a 1 to 1 transformer with multiple taps prior to your main service panel. This will allow you to slightly reduce your voltage. This is not a job for an amateur. If properly sized and installed, the transformer will probably outlast any other piece of equipment. If improperly sized and installed, it can be a hazard and possibly deadly. -- Sparkfighter
It's the RMS value. A 120 volt lamp (light bulb) is rated according to its RMS voltage. Just like appliances in the home are rated at 120 volts (like your fridge, microwave and toaster), or 220 volts (like your clothes dryer). Note that these appliances will have to stand up to the peak voltage on the AC line. Naturally. And the peak voltage on an AC line is 1.414 times the RMS value of voltage. That means in a 120 volt AC line (120 volts RMS), the peak value of the voltage will be 1.414 times the 120 volts, or right at about 170 voltspeak for each cycle.
If you had 230 volts on each legs of a power supply that would be true but it is more likely that you are dealing with a circuit that has 115 volts on each leg and the total is 230 volts across both legs. The Power meter on your house supply line will measure and record all aspects of the currents being supplied to the breaker panel.
Blockage in the fuel line, remove the fuel line at the fuel pump, and use compressed air to blow thru the line from the feed to the fuel filter, if it blows thru then you dont have a blockage, make sure your fuel pump is coming on when you turn on the key, if not check to see if you have 12 volts at the pump when you turn the key on, if not check the fuel pump relay, if you do have 12 volts at the pump when you turn the key on, check the connections on the fuel pump or replace the fuel pump with a new one. make sure to disconnect the battery before removing the fuel pump.
On a three phase system with a line to line voltage of 13800, a wye connection will give you a voltage of, 13800/1.73 = 7977 volts to ground.
The single phase voltage in India is 230v when we check with the phase and the nutral single line
Power = voltage times current, and the power loss is the loss in the line, I^2 * R. At 11,000 volts, the current will be (11,000 / 415 = ) 3.77% of what it is at 415 volts. So the power loss in the line at 11,000 volts will be (3.77% ^2 = ) .14% of what it is at 415 volts.
48 VOLTS
I checked with my other meter and get 120 volts!
A 220 volt line may put out 250 volts because this specification features voltage that varies between 220 and 250 volts. In other countries, the electricity varies in voltage between 110-120 volts.
Fuel pressure regulator, check vac line for fuel in it.
25000kv
If you have a hole in the mouth with a white line around where a tooth use to be mean that you have a tooth coming back in. I would go to the doctor and have them check it out.
A voltage of 380 volts is a three phase voltage. On a three phase four wire system, each phase leg to neutral (grounded) will give you 220 volts. This voltage is obtained by dividing the phase voltage by 1.73, as the phase legs are generated 120 degrees from each other. Square root of three is 1.73 divided into 380 equals 220 volts.
480 volts is probably 3-phase (Line to line) voltage, so: 1500K / (480 x 1.732) = I = 1804Amps