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Determine the minimum cable size for a 28A single phase final sub circuit originating from the distribution board supplied by three phase submain. The route length of the final sub circuit is 54 m. Assume 1% voltage drop in the consumer's mains. Submain specification: Cable: 50mm2 4 core V75 copper; Route length 42m; Maximum demand 135A per phase
1 5395what is difference between 2wire method and 4wire method of winding resistance testing of transformer?
1 3605What will happen if " not connecting the neutral point to ground of diesel generator output (380 V)", also if someone touched one phase without isolation from ground during the A/M condition what will happen to him?
3 6656sigal phase supply is 230 v ac two phase supply is 415 v ac why three phase supply is 415 v ac why not 690 v ac
4 8987Before i went to bed my master bathroom lights were working fine. At 2 am, when I went to use the lights, none of them were working. The outlets throughout the bathroom work, but the lights and fan above the toilet don't. I have two panels of switches. The one panel has four switches. One of the switches turns on the hall light, and that works. The other three are to other lights, and they don't. The other panel has three switches. One of those is to the fan, and the other is to a light above the toilet. The other is a to light that is also on that other panel. I tried the breakers, and the one that turns off the outlets, marked for the bathrooom, turns on and off the outlets. None seemed to be tripped. I checked the lightbulbs, and they are fine. Please help
2 5354If there is volagte between earth and neutral, what should be the reason ? and solution * What should be allowable limit in case, if the voltage between earth and neutral exist ? / OR what is limit for safe voltage between earth and neutral?
3 6498Post New Electrical Engineering Questions
1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?
How to calculate earth wire load by formula
What is dc current source? Differentiate between ideal and non ideal current sources?
What is thresh hold value of current?
How do apply electrical 'c'license......pls advice
An automatic water heater is an example of which type of control system?
WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?
Is it possible to obtain 480v or 550v in single phase output by giving the input to 230v to a single phase torodial type transformer without using a stepup transformer?
At what speed an electric car can run with 2 HP motor of weighing 400 kg?
What is the difference between alternator and generator?
what the Microsoft .NET framework is?
What are the relays in ACB and VCB
What is CCT (Correlated Color Temperature) ?
Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB
from where the self excitrd induction generator get the power?why is the voltage regulation is poor of seig?
