Materials matter: copper resists corrosion and conducts well
https://www.scribd.com/document/1030923633/Electroculture-in-Arid-Climates-Conserving-Water-Naturally-204468
Materials matter: copper resists corrosion and conducts well, while galvanized steel is cheaper but heavier; choose durable wood or bamboo for masts, and avoid treated lumber that may leach chemicals.