An electrical cable comprises two or more wires running side by side and bonded, twisted, or braided together to form a single assembly, the ends of which can be connected to two devices, enabling the transfer of electrical signals from one device to the other. Cables are used for a wide range of purposes, and each must be tailored for that purpose. Cables are used extensively in electronic devices for power and signal circuits. Long-distance communication takes place over undersea cables. Power cables are used for bulk transmission of alternating and direct current power, especially using high-voltage cable. Electrical cables are extensively used in building wiring for lighting, power and control circuits permanently installed in buildings.

Voltage drop describes how the supplied energy of a voltage source is reduced as electric current moves through the passive elements (elements that do not supply voltage) of an electrical circuit.


  • Voltage drop of cable.
  • Size of cable as per electrical load.
  • Current capacity of cable.
  • Motor starting voltage drop.
  • Motor running voltage drop.
  • Appropriate starter for motor.
  • Cable Size and Voltage Drop App was published.

Cable Size and Voltage Drop App is written by using only Microsoft Excel functionality and it works on all devices.


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