What is the voltage drop limit according to the code for a 230-volt supply in a circuit?

In electrical circuits, the voltage drop limit is established to ensure efficient operation and safety. For a 230-volt supply, the code typically sets a maximum allowable voltage drop of 3% for branch circuits. This limit is vital because excessive voltage drop can lead to reduced performance of electrical devices, excessive heating in conductors, and potential safety hazards.

A 3% voltage drop translates to a maximum drop of 6.9 volts (0.03 * 230V). Keeping the voltage drop within this limit helps maintain the voltage at the load within an acceptable range, thereby ensuring that electrical equipment operates as intended and preventing issues related to under-voltage conditions.

By adhering to this standard, electricians can guarantee that installations meet safety and performance guidelines, promoting efficient energy use while minimizing risks in electrical systems.