what is the difference betn earthed and unearthed cables which is commanly used why?

2 Answers   Bhel, Power Grid,

---

what is called star connection and delta connection also purpose of this connections?

3 Answers   Siemens,

---

what is use of mccb.

1 Answers   Simplex,

---

Why is making current of CB always greater than CB breaking burrent?.

6 Answers   JP Group,

---

what is the maximum temperature rating of a thhn insulated conductor?

0 Answers  

---

in ONAN type transformer winding temperature is lower than oil temperature at evening time but morning winding temp is higher than oil temp what is the reason?

2 Answers   Areva,

---

what is the use of current transformer in power transformer secondary side.?its connectyed in WTI

0 Answers  

---

what is distribution board and panel board

3 Answers  

---

Instrument connected to a single phase supply

0 Answers   Alstom,

---

How much CTs are required to measure th curent in DOL starting of motor?PLs explain.

1 Answers  

---

how digital four pin earth resistance tester works

2 Answers  

---

What is the need of motor starter?

6 Answers  

---