Follow Our FB Page << CircleMedia.in >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

How can CALCULAT the current carrying capacity of aluminum
and cOpper cables respective of that Sq.mm ? with
formulas ?

Answers were Sorted based on User's Feedback

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

Use of formula is always a cumbersome exercise.
In pactical 1.5A/sqmm for al,cable & 2.5A/sq.mm is
considered in practical way. means a 50sqmm Al cable will
carry at least 75A and same size copper cable will carry
125A.

 Is This Answer Correct ? 200 Yes 84 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

Thumb rule
For Al Conductor Cable Multiply Sq mm size by 1.5.
&
For Cu cable Multiply sq mm size by 4.
e.g.
70 sq mm Al Cable can take 70×1.5=105 A
&
16 sq mm Cu cable can take 16×4=64 A

 Is This Answer Correct ? 186 Yes 90 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

1.0 To 1.5A/sqmm for al,cable & 2.0 TO 2.5 A/sq.mm is
considered in practical way. means a 50sqmm Al cable will
carry at least 75A and same size copper cable will carry
125A.

 Is This Answer Correct ? 77 Yes 46 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

Check the CCC by any supplier's brochure.
Derate the CCC on the following parameters
Maximum Ambient temp.
Cable buried UG / on air
185 mm2 4 c Alu XLPE cable's ccc = 200 Amps in the Gulf.

 Is This Answer Correct ? 25 Yes 13 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

 Is This Answer Correct ? 19 Yes 11 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

16sq mm amps

 Is This Answer Correct ? 17 Yes 9 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

for cu current in z sq mm = z× 4Amp
for ALU =Z×2 Amp

 Is This Answer Correct ? 5 Yes 5 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

My experience with electricity does not agree with the above answers. For years I have used a 1.5 sq. mm. Al service line for a load of at least 2 KW (ignoring the motor- based appliances whose initial current is much higher). This load required at least 9 amps. which came through the 1.5 sq. mm. Service line! Thus the 'thumb-rule' of multiplying sq. mm. by 1.5 to get the amperage in Aluminium cable is belied in the above instance given by me.

 Is This Answer Correct ? 0 Yes 2 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

Measure the load connected in that cable

 Is This Answer Correct ? 59 Yes 83 No

How can CALCULAT the current carrying capacity of aluminum and cOpper cables respective of that Sq..

As we know that Resistance of conductor is calculated by

R= row*l/a
where row=specific resistance of the conductor i.e
aluminium and copper(depends of material)
l=length of the conductor
a=area of cross-section of the conductor.

And as we know that the conductivity of the aluminium
conductor is <=1 (depends upon the distance of the cable
laid avg.0.8-1) and conductivity of copper is <=1.5
(depends on cable laid. avg. 1.2-1.5).

for ex.take cable length of 180 sq.mm Al. cable

if we want to know the current carryng capacity is
180*o.9=168 A approx.

 Is This Answer Correct ? 30 Yes 58 No

More Electrical Engineering Interview Questions

How impulse levels are calculated that for 11kV impulse is 75kvp, for 24kV impulse is 125kvp ?

What is the difference between MCCB and MCB ?

Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

What is meant by reset level of the relay?

what material is the electrical housing wire made of? is there any difference for the telephone lines?

what is RR number Abbreviation energy meter

what formula can be apply to calculate the No of rtrand of a cable. ?

how to reduce the initial starting amps which is equal to the running load amps

what is power?

How the electric train gets the supply of electricity? What is the return path of the current?

is the value of inductance depends upon the value of thitha in doubly excited machine??

What is Phase margin?

Categories
• Civil Engineering (5081)
• Mechanical Engineering (4448)
• Electrical Engineering (16620)
• Electronics Communications (3915)
• Chemical Engineering (1093)
• Aeronautical Engineering (214)
• Bio Engineering (96)
• Metallurgy (361)
• Industrial Engineering (258)
• Instrumentation (2994)
• Automobile Engineering (332)
• Mechatronics Engineering (97)
• Marine Engineering (123)
• Power Plant Engineering (171)
• Textile Engineering (575)
• Production Engineering (0)
• Satellite Systems Engineering (106)
• Engineering AllOther (1379)