Work out the resistance of 1.0 km of the cable by treating the wires making up the cable as resistances in parallel
do P=V2/R
Original post by Joinedup
Work out the resistance of 1.0 km of the cable by treating the wires making up the cable as resistances in parallel
do P=V2/R
do P=V2/R
So do 75^2/(1.1/6)
Original post by Ayaz789
So do 75^2/(1.1/6)
That's just the 6 aluminium wires... the steel wire should also be included
Original post by Joinedup
That's just the 6 aluminium wires... the steel wire should also be included
So its 75^2/(1.1/6)+3.3?
Original post by Ayaz789
So its 75^2/(1.1/6)+3.3?
should be getting 752/0.17 for 33kW
Original post by Joinedup
should be getting 752/0.17 for 33kW
How did you get 0.17 on the bottom?
Original post by Ayaz789
How did you get 0.17 on the bottom?
1/R=1/R1+1/R2...
so
R=1/(1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/3.3)
or
R=1/(6*(1/1.1)+1/3.3)
Original post by Joinedup
1/R=1/R1+1/R2...
so
R=1/(1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/3.3)
or
R=1/(6*(1/1.1)+1/3.3)
so
R=1/(1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/1.1+1/3.3)
or
R=1/(6*(1/1.1)+1/3.3)
Okay thanks i understand it
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