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If I have a 200 amp 3 phase 4 wire box what is the maximum load adding up all machines lights etc is it 200 amp total or 200 amp X 3 phase 600 amp load max?
If you have a 200 amp main breaker, it will trip when any one of three phases exceeds 200 amps. This does not give you 600 amps total, only 200 amps total, but on each of three phases. Your three phase machinery and equipment will likely load all phases evenly, and a good electrical design will load your lights and receptacles evenly on all three phases. Doing this reduces the possibility that two phases are loaded at 100 amps, but one is loaded at 205 amps, so the main trips for example.
What else can I help you with?
What will be the full load current of single phase 5Kva ups?
Assuming single phase voltage 220 Volts AC, the maximum current would be approximately 25 amps.
At what phase angle is the voltage momentarily constant in a sine wave?
We often see the peak and trough (maximum positive and maximum negative excursions) of the sine wave considered as points of momentarily constant voltage. Those points are at phase angles of 90 degrees and at 270 degrees.
In a 3-phase high voltage star-star connection 140KVA transformer and load phase voltage is 115v and frequency is 400hz what is the total load current?
Maximum load current on a 140KVA, three phase transformer when the output voltage is 115 v phase to phase is: 140kva / sqrt (3) / 115 = 703 Amps. frequency does not matter here.
What are the averag volts used in a US Home?
US homes use a 240 volt single phase 'Edison' system. It is a 3-wire (4 with the ground) system. Phase to phase measures 240v, while each phase to neutral measures 120v.
What is the effect of an unbalanced load of generators?
An unbalanced load prevents the generator delivering its maximum power. That is because each phase has an equal upper current limit that it can deliver, and in an unbalanced system, if one phase is delivering the rated current it follows that the others are not.
Why single phase synchronous machines are not there?
Not where(?)
How power factor can be improved in trasformer?
Adding a capacitor in parallel with our load(inductive) this would make our voltage and currents in phase n hence a maximum power factor.
Which phase consumes the maximum effort in waterfall model for developing a software product and why?
The testing phase consumes the maximum effort in waterfall model.
What are the advantages of poly phase over single phase?
The primary advantage is that, for a given load, a three-phase system requires less copper for tranmission/distribution than an equivalent single-phase system would require. Other advantages include the fact that three-phase machines are smaller than single-phase machines of similar rating.
What frequency is used for electric power delivered to homes in Canada?
Homes in Canada use 240/120 volts at 60 cycles per second (60Hz) single phase. It is a split-phase system that delivers 240 volts to large domestic appliances (e.g. washing machines, dryers, air-conditioners, etc.) and 120 volts to lights and general socket outlets used for small appliances (coffee machines, electric shavers, televisions, etc.).
When in a cells DNA content at its maximum?
A cell's DNA content is at its maximum during the S phase of the cell cycle when DNA replication occurs. At the end of S phase, each chromosome has two sister chromatids, doubling the amount of DNA in the cell compared to G1 phase.
What is the phase shift for a sin wave with the maximum amplitude at time zero?
For a sine wave with maximum amplitude at time zero, there is no phase shift. The wave starts at its peak at time zero, and therefore, its phase angle is zero.
What conditions must be met before two alternators can be paralleled together?
before two alternators can be connected in parallel, the output voltage of the two machines should be the same, the phase rotation of the machines must be the same, and the output voltages of the two machines must be in phase.
What is single phasing preventor?
Single phasing preventor is an electronic circuit which prevents the Thee phase operated Electrical machines from single phase cut off, Phase reversal and phase imbalance.
What is needed to make an object change phase?
heat. adding or subtracting
What is the condition at which torque developed in 3 phase induction motor is maximum?
sadasd
How is three phase power useful to consumers?
Three phase power is always delivering power on one of the phase continuously. This is very useful to manufacturing industries to operate the machines, which require high power utilization.
