how to select cable size?
Answers were Sorted based on User's Feedback
Answer / brewed
There are many factors to consider when choosing cable
size .nd I will list just but a few.
1. You need to know the kind of load.
2. you need to know if its undergrond, overhead, in or out
doors
3. You need to know the temperature of your environment.
4. You need to consider the atmospheric pressure
With these and other facors you multiply them, depending on
your installation rules, to get a k factor which will then
depend on rated current carrying capacity of the cable at
hand.
| Is This Answer Correct ? | 13 Yes | 4 No |
1.Voltage level.
2.Type of cable going to used.
3.Whether the cable is going to laid in air,tray or in
burried.
4.Derating factor, Grouping Factor and ambient temperature.
5.Voltage drop as per the standards.
| Is This Answer Correct ? | 5 Yes | 3 No |
Answer / fida
I am using transformer turn ratio tester for 250KVA 13.8KV
primary and 220V secondary transformer what should be the
correct values of turn ratio test how i assume the correct
values for turn ratio.
| Is This Answer Correct ? | 3 Yes | 6 No |
Answer / leturtle
It is normal practice to have a rating for the earthing
system commensurate with the maximum system design fault
level. The normal maximum 400kV fault level is 63kA 1s.
Take the formula from EA TS 41-24 [6]
If you can't find it go to www.ees-group.co.uk on the FAQ
section.
| Is This Answer Correct ? | 1 Yes | 4 No |
what is the difference b/w low voltage motors & medium voltage motors
practically What is power factor
whay we transmit power in 3phase no in 4 or 2 or 5......etc?
for star delta connection,,why the contactor star not burn,when red,yellow and blue cable is looping.
2 Answers Mahindra Water Utilities,
What we mean by vintage of an engine+Generator?
How many 2 ton window A/c can runs on a 125 KVA generator?
Why a dc generator gives result during two different condition,- 1)separately exited gen.- Eg=110 V, field current=0.25 A. 2) self exited gen.- Eg=30 V, field current=0.025 A.
What is the difference between CRNO and CRGO in an transformer and what is the advantages of these two.
13 Answers Anchor, CIL, ETA, Kirloskar,
in 220 kv substation,what is the mean of avr voltage reading? means at oltc temp. 36 the avr voltage was 109v.so what the mean of 109v
Use of electrical theorems (thevenin's,norton's,millmen's,superposition,reciprocity, Maximum Power Transfer theorem,Compensation Theorem) IN REAL LIFE???(IF YOU KNOW EXACT OR CORRECT ANSWER).
2 Answers College School Exams Tests, L&T, PESIT, Wipro,
As we use capacitior bank in 3ph ckt for improvement of PF, why not we use capacitor in single phase domestric use, at our house their are many inductive equipments,like fan,mixer,tube choke,air conditioner they also draw PF... by using capacitor can they improve PF. if yes--what are advantage and how to connect a capactor in single ph,and which type of capacitor if no- what are disadvantages.
Dear all, is ther any body who can tell me about the setting of ACB(air circuit breaker ). what kind of it,s setting is and how to do it,s setting. also please tell me the setting of VCB(vaccume circuit breaker) . please tell me their setting,s. i will b very thank ful to all of u. Thank,s and Regard,s. Muhammed Ikram.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)