What effect does high voltage and low current have on wiring requirements?

Study for the Flight Engineer Written FEX Exam. Prepare with multiple choice questions and detailed explanations. Get ready for certification!

High voltage and low current primarily allow for a reduction in wire size and weight while still maintaining the ability to transmit power effectively. The relationship between voltage, current, and resistance is governed by Ohm’s Law, which states that current is equal to voltage divided by resistance. Thus, when the voltage is high, it is possible to transmit the same power using less current, which translates to a reduced requirement for the gauge of wiring needed.

With lower current flowing through the wire, the risk of overheating diminishes, which further allows for using smaller wire diameters without compromising safety or performance. Lighter wires not only ease handling and installation but can also yield significant benefits in aircraft design where weight is a critical factor.

Further, while options involving increased insulation, installation complexity, and safety measures may come into play because of high voltage, they do not negate the fundamental advantage of reduced wire size and weight under these electrical conditions.

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