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 |
"What is the difference between voltage and potential differnce?"
why circuit breaker closing time is always higher then tripping / opening time.
What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.
When connecting a loaded powerplant to the Huge grid,what are the factors to be considered and how the VAR flow will affect the system?
What is current and voltage?
In secondary transmission i.e., in distribution side, supply for homes are connected through different phases in order to balance the 3 phase load. But in practical we saw nearby house doesn't have power due to single phasing. But other two phases give supply. How it's possible? it doesn't make "single phasing"?
Form fator is the ratio of?
for ac networks if the voltage wave form is V=Vm sinwt here the voltage Vm=230 for the frequency 50hz then the time period is 0.02 sec then for the time period 0.12 sec what is the voltage
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor reactance at stand still is A 2 ohm B 1.25 ohm C 3.15 ohm D 2.25 ohm
3 Core x 35 Sqmm Cable (How we measure 35Sqmm)
4 Answers Alpha Star, Brother,
i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?
How much dc volt applied in cathodic protection system?