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What is the result when a 400v device's load is connected between the two phase legs of a 3 phase distribution?
Wiki User
∙ 7y ago
It works normally. Well actually there are 380 volts across two lines of a 3 phase AC source, so it should work normally.
Wiki User
∙ 7y ago
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Why might the amount of current and voltage in a circuit need to be balanced?
It is not so much the voltage that has to be watched but the amperage. On a split phase secondary 120/240 volts or a neutral of a three phase wye connection 120/208 volts the neutral carries the unbalanced current from the connected loads.To keep this unbalanced current down to a minimum the load breakers have to be shifted around in the distribution panel. The object is to balance the connected loads so that the neutral will carry minimum load. Depending on where in the distribution panel the breakers are positioned will result in what the current on the panels neutral will draw.The general procedure for electricians is to place a clamp on amp meter on the distribution panels neutral and write down what the amperage draw is on a fully loaded distribution panel.Then take readings on the individual loads of the circuit amperages and mark them down on a piece of paper.Once all of the loads have been read try and put the closest load amperages across from one another.Once all of the balancing has been done use the amp meter on the panels main neutral conductor and see how much lower the reading is now as to what it was at the beginning of the exercise.This is known in the electrical trade as balancing the distribution panel.With this in mind the electrical code book allows for the use of reduced neutral conductor sizing as compared to the size needed for the main feeder conductors. This in turn reduces the installation costs of a service distribution systemOn reduced neutral distributions, this is why the amperage is to be kept to the lowest possible rating so as not to overload the smaller conductor size used for the distribution's neutral.
Is voltage drop across each device the same in household circuits?
No, even though these are parallel circuits, the voltage drop across each device is not the same in house hold circuits, or anywhere, for that matter. Different devices pull different currents. A toaster, for instance, pulls many times what a light bulb pulls. Since wires do not have truly zero resistance, those differing currents result in different voltage drops across the wires that lead to the devices. That small voltage drop in the wires results in a different voltage drop across each device, even though the device/wire is connected to the same voltage source.
What is equipment noise?
Electronic devices often emit a high pitched low volume squeel. This is often the result of transformers or capacitors as current passes through them. Alternatively, this may be signal interferrence in signal waves.
A device that protects a circuit from current overload is called?
Fuses or circuit breakers are termed 'overcurrent protection devices', which protect circuits from either an overload current or a short-circuit current.
What is Baushchinger effect?
The Bauschinger effect refers to a property of materials where the material's stress/strain characteristics change as a result of the microscopic stress distribution of the material. An example is an increase in tensile yield strength at the expense of compressive yield strength.
What type of port allows up to 127 hardware devices to be connected to the computer host?
The USB interface is designed to handle up to 127 devices at up to 480 Mbps. Realistically anything more than about 2 dozen devices will usually result various odd behaviors.
How can SST distribution affect weather?
Interaction between the atmosphere and ocean occur at the surface and result in the transfer of heat and moisture.
What is the result of earths rotation?
An even distribution of sunlight.
What is Unequal distribution of income a result of?
Unequal Distribution of invcome results in the rise of POVERTY.
What is the timing of distribution of result?
the timing is 3.00p.m
What is the result of rotation?
An even distribution of sunlight.
What molecules result from an even distribution of the electron cloud?
I think you're talking about nonpolar covalent molecules. These molecules share their electrons equally between atoms.
If data are organized with several values together the result is?
The result is a collection of grouped data.
Do hydrogen bonds form from an equal charge distribution within a molecule?
No. Hydrogen bonds form as a result of highly unequal charge distribution.
When a change has occurred in the mean of the process distribution the result is referred to as?
A level shift
Why should nichrome or iron-containing inoculating devices not be used in the oxidase test?
It can result in a false positive result.
Why is the normal probability distribution called a family of normal probability distribution?
Because very many variables tend to have the Gaussian distribution. Furthermore, even if the underlying distribution is non-Gaussian, the distribution of the means of repeated samples will be Gaussian. As a result, the Gaussian distributions are also referred to as Normal.
