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Surge Protector Installation Best Approach

Voltage Drop Calculation in an Electrical Circuit

  Wires used in electrical installations must be suitable for carrying current and avoiding excessive voltage drops. With a few exceptions, NEC has no voltage drop requirement as it is not considered unsafe. However, it wastes energy, so it's up to you to investigate.   Voltage drop is the total amount of voltage loss experienced by all or part of a circuit due to impedance and other factors. The higher the voltage drop in the system, the more likely adverse effects will occur. Voltage drops are considered system losses and inefficiencies as they can lead to malfunctions and poor performance of the entire system. Due to the fact that voltage and current are transmitted through cables and wires, resistance or impedance will develop based on the cable's size(cross-sectional area) or length. Consequently, after doing the voltage drop calculations, the final cable and conductor size