THHN THWN THWN-2 Ua kūpono no ka hoʻohana ʻana ma ke ʻano he mīkini, kaapuni hoʻomalu, a i ʻole ka uwea mea hana.Loaʻa nā THNN a me THWN i ka pale PVC me nā lole nylon.ʻO ka thermoplastic PVC insulation ka THHN a me THWN uea he mau mea pale ahi, aʻo ka lole nylon hoʻohui pū kekahi i ke kū'ē i nā kemika e like me ka ʻaila a me ka ʻaila.