What is the effect of using wire sizes that are too small in a marine electrical system?

Using wire sizes that are too small in a marine electrical system can lead to overheating and potential hazards due to increased electrical resistance. When an electrical current passes through a wire, it encounters resistance, and if the wire is undersized for the amount of current it carries, it can generate excessive heat. This heat build-up can create a risk for insulation damage, which may lead to short circuits, electrical fires, or equipment failures.

Additionally, undersized wires may impair the performance of electrical devices by causing voltage drops, resulting in inefficiencies and potentially damaging sensitive electronics. Proper wire sizing is crucial to ensure safety, efficiency, and optimal operation of electrical systems in marine environments, where conditions can be particularly demanding. This highlights the importance of adhering to ABYC standards and guidelines for electrical installations to prevent such risks.