Why should household cords be avoided in marine electrical systems?

Household cords should be avoided in marine electrical systems primarily because they aren't designed for the harsh marine environment and can present significant safety hazards.

In marine applications, the environment is characterized by increased humidity, exposure to saltwater, fluctuating temperatures, and potential physical damage from movement and vibrations on the water. Household cords typically lack the necessary insulation and waterproofing required to withstand these conditions. As a result, using household cords can lead to corrosion, short circuits, and potential electrical fires.

Moreover, marine-grade wiring is specifically engineered to resist the elements and reduce the risk of failure, ensuring safer and more reliable operation in challenging conditions. The use of inappropriate wiring can compromise the overall safety of a marine vessel, leading to hazardous scenarios for both the vessel and its occupants. This highlights the importance of using properly rated marine electrical components designed for that specific environment.