Answer / ratheesh

Types of wires:

7/20 , 3/20 & 1/18 wires types are there.

Nominal C/s area in mm:
This is for three phase connection

Main cabinet to DB box 7/20 = 7/.914mm
DB box to Geyser 7/20 = 7/.914mm
DB box to AC point 7/20 = 7/.914mm
Main cabinet to EB box earth wire 3/20 = 3/.914mm
Switch board to individual points 1/18 = 1/1.12mm

This is for single phase connection

Main cabinet to DB box 7/20 = 4mm
DB box to Geyser 7/20 = 7/.914mm
DB box to AC point 7/20 = 7/.914mm
Main cabinet to EB box earth wire 1/18 = 1/1.12mm
Switch board to individual points 1/18 = 1/1.12mm

what is the thickness mortar between two bricks

14 Answers   bscpl, L&T,

---

Draw a neat sketch showing the 'throat' of a welding in a plate girder ?

0 Answers   Rites,

---

In an aggregate blending plant, water is sprayed before blending is performed. If the fine content in aggregate is as high as 25 %, will not the fines form into lumps / balls and distribution will not be uniform ? Further, the fines will stick onto the interior of pug mill and its content will be low. The mixed material is stockpiled for weeks / months before use. Will it not be better that blending is done in dry condition, and water will be added only during compaction at site. Please forward your comments and suggestions.

0 Answers  

---

What is the coeffiencent Friction Angle between Steel and Ashphalt?

0 Answers  

---

define curing? what is the necessity of curing?

3 Answers  

---

which percentage is maximum in good quality cement?

5 Answers  

---

How to calculate the length of chairs provided to support the top rebar in concrete foundation

2 Answers   L&T, TCE,

---

What are the Tests required to check the Quality of bar?

3 Answers  

---

any one tell me what is the volumetric ratio and weigh bathing ratio of 6000 psi concrete. plz help me on this matter.

1 Answers  

---

how to calculate the density for high density concrete ? or is it same as the density of RC?

0 Answers   Gammon,

---

Draw the cross section of a boundary wall and label its part with detailing?

0 Answers   Rites,

---

which type of cement uses for R.C.C. & why?

2 Answers   Ideal Construction‎,

---