Answer / rvg

Fire pumps are emergency equipment, and even if there is
earth leakage, it should work uninterrupted.
So ELCB's are not used with fire pumps as per NFPA norms

Answer / prabakaran

Fire pump is used high rating pumps.its running sudden time at time elcp means automatically fall down because fire pipe connection is their in entire building so complesery connect any electrical distortion.so automatic ELCB tripped

Answer / a.alexander

1.reduce electrical short circuit.
2.reliability.
3.safty
4.fast working

Answer / pawan dahiya

ELCB full name earth leakage circuit breaker , normaly
ELCB used in main control line & very senstiv eqpment and
ELCB link in VCB\ACB etc. Earth leakage time going to
single in VCB\ACB so main breaker trip . But fire pumps do
not used becouse fire pumps is very emergency system.
becouse ELCB leakage time do not running the fire pumps.
fire pumps used only two earthing

if ELCB and RCCB connected in series,what wiil be the result

2 Answers   BEC,

---

Name the earthings?

3 Answers   HSL,

---

what is softstarter?

2 Answers  

---

Define protection core in CTs Ex. 5P10, 5P20 etc.

1 Answers   HPL,

---

i've iocl interview.. if you know the interview process please give me information..

0 Answers  

---

what is cathodic protaction?

0 Answers  

---

how to calculate the current carrying capacity of cable

2 Answers   Bhel,

---

Classify milling machines.

0 Answers   Ashok Leyland,

---

why the capacitor bank unit is kvar

3 Answers   Infosys, L&T,

---

as we see that in our country the power rating for transmission is always rated in multiple of 11 like 11kv,33kv,66kv132kv. So i want to know wht is reason or logic here.

2 Answers  

---

which inert gas is most apt to be used in a fluorescent lamp?? why ??

1 Answers  

---

How to calculate the breaking capacity(like 15ka,20ka) of Circuit breaker (MCB,MCCB,ACB)

9 Answers   Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM,

---