Materials matter: copper resists corrosion and conducts well

https://www.scribd.com/document/1023926197/Electro-culture-Gardening-for-Tropical-Climates-Heat-and-Humidity-Tips-203265

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.