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

For a 230-volt supply, the code typically sets a voltage drop limit to ensure efficient operation and safety of electrical circuits. The commonly accepted standard for voltage drops in branch circuits is 3%. This means that the maximum allowable drop in voltage when current flows through the circuit should not exceed 3% of the supply voltage.

To calculate this for a 230-volt system, you multiply 230 by 0.03 (3%), which gives a maximum allowable voltage drop of about 6.9 volts. This limit is established to prevent excessive voltage drop that could lead to underperformance of appliances and lighting, safety issues, and potential damage to equipment.

Applying this guideline helps ensure that electrical installations are both effective and safe, maximizing energy efficiency and reducing risks associated with voltage loss.