in a three pin socket y the pin of earthng is longer n
bigger...?
Answers were Sorted based on User's Feedback
Answer / sai nitish
As the resistance Is inversely proportional to cross sectional area,when ever a short circuit occurs a huge magnitude of current flows through earth pin.earth pin provides a low impedance path for the fault currents.due to this fact the earth pin is made bigger compared to others. Low impedance implies high current and higher cross sectional area
Is This Answer Correct ? | 2 Yes | 1 No |
It helps in two ways:
1. Longer earth pin will first earth the equipment body before the phase is connected to the equipment.
2. Its cross section is larger. As resistance is inversely proportional to area, Lesser is the area of cross section , less is the resistance which helps fault current to adopt this path instead of human body.
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / sheikh
Earth pin would be longer than phase and neutral pin because
connected equipment may be earth in first.
Is This Answer Correct ? | 0 Yes | 0 No |
Can we use HRC Fuse inplace of Semiconductor fuse?
what is the CT of protection and CT of metering ? what is class 5P10 & 5P20 and class PS ?
16 Answers JEE Main, ONGC, VRA,
substation+ plc system
Why do we give DC excitation to AC Synchronous motor??
9 Answers Lance, MBM, Polycab,
why batteries are rated in ampere hour
what will happen if ac power supply is given to the rotor of an alternator
whate is aelectrical power fector for exampal
what is an invertor A.C.?
Why used in layer by layer charcoal and salt used in earth pits.
11 Answers CESC, HP,
What is the difference between harmored cabled and unharmored cables
What is WLD System????
3 Answers Emerson, HCL, Honeywell, Tata Communications,
I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?