Gas Fitter Practice Test

Increasing the wire size is a necessary action when the length of an electrical run increases due to the principles of voltage drop and resistance. As the distance between the power source and the load increases, the resistance of the wire also increases, which can lead to a significant drop in voltage by the time the electricity reaches the destination. By selecting a larger wire size, you can reduce the resistance in the circuit, minimizing the voltage drop. This ensures that the electrical device receives the required voltage for optimal performance and safety. It is important to adhere to local electrical codes and standards that often specify maximum allowable voltage drops for various applications, ensuring that equipment operates efficiently and safely. While other options might involve considerations in specific circumstances (like fuse sizing for safety), they do not directly address the fundamental issue of voltage drop caused by longer runs.