WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF
COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

Question Posted / vivek

14 Answers
65200 Views
Dubai Group, Saudi Delta Groups, Savitha Electricals, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SI..

Answer / arun kr. singh

The Thumb rule is:

Size of cable x 4 = Current rating of cable.

e.g rating of 2.5mmsq cable is: 2x4=8A
for 4mmsq cable is: 4x4=16A

Is This Answer Correct ?

15 Yes

32 No

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SI..

Answer / naresh

ans 5 and ans 1 combined r correct

Is This Answer Correct ?

5 Yes

27 No

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SI..

Answer / malkit singh

ANswer # 1 is correct

Is This Answer Correct ?

14 Yes

39 No

WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SI..

Answer / prashant

IBELIEVE

1.5 SQ MM - 5A

2.5 SQ MM - 10A

4 SQ MM - 15A

6 SQ MM - 20 A AND SO ON

Is This Answer Correct ?

66 Yes

142 No

Post New Answer

More Electrical Engineering Interview Questions

In LRS how much water PH value maintain for good operation of motor?

3 Answers

what are the settings is there for ABB REM543 Generator Protection Relay

1 Answers

Define magnetic centre in a motor?

1 Answers

Explain the grounding concept adapted in aircrafts?

2 Answers

We have a bank capacitor rating of 60 KVAR for a overall load of 160 KVA and we have connected three loads of 50KVA each. We would like to auto matically correct PF using APFC. How do we design it?

2 Answers

Why we are use dol starter up to 10 hp

0 Answers

how many power plants in andhra pradesh,how many types and there capacity

2 Answers

In any Industry, Which voltage level either 3.3kV or 6.6KV to be chosen? Then I would like to know ,Is there any cost consideration or Rating of motor?

5 Answers

HOW CAN I GET 5CORE HO7 CABLE SIZE IF I HAVE 1800A?

0 Answers

What is Automatic interlocking circuit dighram between two contactor for DG SET panel.

1 Answers

What is the minimum underground tank size capacity considered for firefighting purpose?

0 Answers

What is spike & surge.

2 Answers

For more Electrical Engineering Interview Questions Click Here