What system must not include high current conductors and AC or DC circuits together?

The wiring system must not include high current conductors and AC or DC circuits together due to safety and performance reasons. Mixing high current conductors with other circuit types can lead to issues such as electromagnetic interference, overheating, and potential electrical hazards.

High current conductors are designed to carry larger currents, while AC and DC circuits have different operational characteristics and safety requirements. When these elements are combined improperly within the same wiring system, it can create increased resistance, which may result in voltage drops or power loss and can also lead to dangerous conditions, such as the risk of fire or equipment failure.

Therefore, it is essential to maintain separation between high current conductors and lower current or different type circuit systems within the overall wiring architecture to ensure both safety and the integrity of the electrical system. This separation is a critical component of good electrical design as outlined by standards such as those from the ABYC (American Boat and Yacht Council).