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how do you choose the cable size as per amps rating & the voltage drop for the same.
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Answer Posted / Akansha Singh
To choose the appropriate cable size based on the amperage rating and voltage drop, follow these steps:n1. Calculate the total current flowing through the circuit: I = P / V, where P is the power and V is the voltage.n2. Choose a suitable cable type based on the current rating of the circuit (AMPS). Common cable types include copper wire, aluminum wire, and multicore cables.n3. Determine the allowable voltage drop across the cable: Vdrop = I * R, where R is the cable resistance.n4. Check the manufacturer's specifications for the chosen cable type to find its resistivity and calculate the cable resistance per unit length (Ω/m).n5. Calculate the total resistance of the cable needed for your application: Rtotal = (Vdrop / I) * (length of cable / resistivity per unit length).n6. Choose a cable size that has a resistance close to or lower than the calculated value for Rtotal.
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