Answer / annonymous

Usually we dont lay any type of cables in the maintenance bay, but you can lay it, but make sure it does not physically interfere with the maintenance activities i.e. equipment handing etc. or block the access ways there.

Also, your client may also not permit you to do so.

What is the maximum number of swithes that can be connected in series up to down stream point in an LV Distribution system?

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is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.

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what is the capacity of storing mass electricity.

1 Answers  

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we have one ups its neutral is not earthed.its one distribution MCB has a earth fault.but we can not put off any MCB.so how to find out that in which circuit is earthed without isolating the breaker.

3 Answers   CFCL,

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can i know how to design overcurrent setting and earth fault for 11kv & o.433kv system assuming tx 1000kva.

2 Answers  

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What is the difference between a 3 winding and 2 winding Potential Transformer

0 Answers   Engineers India,

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A circuit breaker is a

9 Answers  

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when conductor rotates in varying magnetic field the emf will induced in it and it is sinusoidal in nature ...? Why it is not in square wave and rectangular wave in nature?

4 Answers  

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in traction which type of supply are used

15 Answers   APGenco, Construction,

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if a motor has 1500rpm then what will its HP?

3 Answers   Willdale,

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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why motors are rated in HP?

3 Answers   HCL, ncpl,

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