Which factor must be considered when determining the size of the conductor required to connect an electrical load to the source of supply?

When determining the size of the conductor required to connect an electrical load to the source of supply, one significant factor is the permissible voltage drop. Voltage drop refers to the reduction in voltage in the electrical circuit between the source and the load, which can occur due to the resistance in the conductor.

It is critical to control voltage drop to ensure that the electrical equipment operates efficiently and within its specified voltage range. Excessive voltage drop can lead to inadequate performance of the devices powered by the circuit and potentially cause damage, overheating, or premature equipment failure. Regulations and standards often provide guidelines on acceptable limits for voltage drop based on the total length of the circuit and the type of load. By considering the permissible voltage drop, electricians can select an appropriately sized conductor that minimizes losses and maintains reliable operation.

This focus on voltage drop helps ensure that the conductor can effectively deliver sufficient power to the load without experiencing excessive losses, which is essential for the overall performance of electrical systems.