Which of the following would NOT be considered a factor in electrical voltage drop?

The type of insulation used on wires does not influence electrical voltage drop. Voltage drop in an electrical system primarily occurs due to the resistance of the conductor as electricity flows through it. This resistance is affected by factors such as the length of the conductor, where longer conductors have more resistance, and the current flowing through the conductor, with higher current leading to a larger voltage drop due to increased resistive losses.

Insulation's primary role is to prevent unintended current flow and to protect against electrical hazards, but it does not directly impact the resistance of the conductor itself. In contrast, the other factors, such as the length of the conductor and the current flowing through it, are critical in determining how much voltage is lost as electricity travels through the system. Environment temperature can affect resistance but is more of a secondary effect rather than a core factor in calculating voltage drop under normal operating conditions.