Current flowing through improperly grounded shielded cables will cause noise in the system. The only solution is to provide proper grounding of the system. The resistance to the flow of current is expressed in ohms. Every material offers some resistance or opposition to the flow of electric current. The size and type of material in a circuit is chosen to provide the lowest resistance possible.
Copper is an excellent conductor for the price.
Despite these technical differences, it will serve the same function. Consult your Coleman representative to determine suitability for the application.