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
Answer / manoranjan
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 ? | 206 Yes | 84 No |
Answer / satish
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 ? | 188 Yes | 100 No |
Answer / gaurav
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 |
Answer / martin
Check the CCC by any supplier's brochure.
Derate the CCC on the following parameters
Maximum Ambient temp.
Cable buried UG / on air
Clearance between adjuscent cables.
185 mm2 4 c Alu XLPE cable's ccc = 200 Amps in the Gulf.
Is This Answer Correct ? | 26 Yes | 13 No |
Answer / devi prasad
for cu current in z sq mm = z× 4Amp
for ALU =Z×2 Amp
Is This Answer Correct ? | 5 Yes | 5 No |
Answer / aloke kumar pati
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 ? | 1 Yes | 2 No |
Answer / amitamit makanbacem
read the datasheet of cable factory, don't play smart with
formulas, u stupid dumbass
Is This Answer Correct ? | 48 Yes | 78 No |
I have a reading off 1.5ohms at my mem my main c/b is rated at 40/6 amps in a domestic house and i was told to change it to a b curve c/b is this ok
How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.
I know during Surge Impedance Loading maximum power is transferred through a transmission line and also Sending end voltage becomes equal to Receiving end voltage i.e Vs=Vr so my question is if both end voltages are equal then how current travels in such line hence how power is transmitted because flow of current needs Potential difference??
what type of motor used to move a 1 ton gate? and relate ratings with load.
How many safety of Disel Generator
why the name mho relay,despite the locus of circle is impedance?
How to calculate the value of capacitance of a capacitor used in power factor improvement plant if we know KVAR and voltages?
what is surge arresters ?........
what is stalling of a motor?
What is the formula to find out the kvar required to improve the powerfactor from .85 to .99 at 1500kw, 415v.
1. what is difference between VCB and ACB.how its works please explian.
6 Answers ABB, Accenture, HP, Minda, Mother Dairy, Satyam Pharma,
how diside ct mf exmp.200/5 ct