In three phase supply why we use R Y B Colour not other.

4 Answers  

---

what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

0 Answers  

---

what the different between earthing and grounding?

4 Answers  

---

what is wave trap? please explain the working and principle

4 Answers  

---

Is it necessary to seperate the DG earth grid with Electricity Board earth grid for protecting the DG set. if yes why?

2 Answers   BARC,

---

---

What are the components ofan HT panel in a 11kv power station?

2 Answers   Reliance,

---

What is the difference between a Junction Box and a Marshalling Box?

8 Answers  

---

how to calculate the bus-bar size. give formula with description

1 Answers  

---

How can i calculate the Breaking capacity of molded case circuit breaker, is the breaking capacity of CB for Diesel generator shall be less than grid supply's breaker ?

0 Answers  

---

why in India it is maintained for exactly 50HZ frequency, why it is not that 49Hz,why it is so?

2 Answers  

---

What is phase cross over frequency?

0 Answers  

---

how can we calculate the ampacity of the electrical wire/cable. and what are the factors must be considered. pls. elaborate.

0 Answers   Webel,

---