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Electrical Wiring
Ask questions here about proper wiring and electrical installation here.
4,935 Questions
What would you do if the electrical cleaning equipment is grounded?
The electrical cleaning equipment should be grounded. This grounding is what protects the operator from a serious shock should the the cleaning equipment have an electrical fault occur.
The conductor used to transmit power has a specific resistance at the given power frequency. Power transmitted is equivalent to I^2 * R, so as the current increases, the power loss from the conductor also increases. To maximize efficiency, power is converted to very high voltages, which decreases the current, which minimizes the power lost in transmission.
AnswerThe primary reason for using high voltage transmission lines is because, for a given load, the higher the voltage, the lower the load current. Low voltages would require cables of enormous cross-sectional area making transmission impossible, whereas high voltages allow the use of manageable-sized conductors. A secondary reason is the corresponding reduction in line losses -as described above.How can people reduce the amount of electricity used by an air conditioner?
The best way to reduce the amount of electricity used by an air conditioner is to raise the set point of the thermostat to a warmer setting.
First visualize a sine wave. It undulates between positive and negative voltage in a form that looks like the wave that ripples out when you drop something onto still water. If you took a picture across a slice through multiple ripples you would see a positive hump and then its negative image. So the wave is gradually rising to a peak and then falling to a valley. If you superimposed two such waves upon each other and they matched perfectly where they crossed zero and where they peaked positively then the waveforms would have the same frequency and would be in phase.
If you took these in phase waveforms and then slid one over the other so that the positive and negative peaks occurred at the same time the waveforms would be 180 degrees out of phase. In a three phase system the peaks of three waveforms are each one third cycle from the other or 120 degrees out of phase with each other.
In a three phase system each waveform is on separate wires so that you can either run a device such as a motor that runs on 3-phase power or you can add different phases together to get different voltage outputs or use each voltage separately as single phase services.
If you cant plug the 50hz appliances to 60hz what you need to do?
In many such cases, where the power needed is low, say less than 30 Watts, a cheap and simple "International Travel Socket Adapter" is all that is needed to make the appliance plug-in and work. Many international airports have shops selling such adapters.
Further information
Some small portable 50 Hz appliances - such as electric shavers, battery chargers for cell-phones, cameras, music and video players, laptop or netbook personal computers, etc. - have been designed to run safely on different supply voltages and frequencies. Whenever that is so, it should be clearly stated on the appliances' rating-plates.
But, for most other household appliances - especially large ones such as washing machines and clothes dryers - the most straightforward answer has to be:
If an appliance was designed and wired to run only on the 50 Hz power service that is used in Europe and elsewhere, it is not suitable for use on a 60 Hz service.
For more detailed information read the answer to the Related question shown below.
You can't convert kV (kilovolts) to current (amps) unless you know the resistance (ohms) of the load which is taking current from that voltage source.
Once you know the resistance then you can use Ohm's Law to get the amperage:
I = V / R
In words, Ohm's law is:
Current (amps) equals voltage divided by resistance (ohms)
What are the uses of a conductor in high ressitance?
they are used to reduce the resistivity,owing to the fact that the conductor introduces current into the resistance
The electricity that is delivered to homes from the regional generating stations uses high voltage in its distribution. This is then transformed from the high voltage on the primary side of the transformer to a lower voltage on the secondary side of the transformer. The common household voltage throughout North America is 120/240 volts obtained from the secondary windings of the step down utility owned transformer.
6 separate 18kOhm resistors wired in series make a total resistance of:
18k+18k+18k+18k+18k+18k which is 108 kOhm.
6 separate 18kOhm resistors wired in parallel make a total resistance of:
1/[(1/18k) + (1/18k) + (1/18k) + (1/18k) + (1/18k) + (1/18k)] which is 3 kOhm.
