1. Ɛwɔ hygroscopicity a emu yɛ den. Ogya-Nhama a ɛko tia no taa de nneɛma a ɛma mineral insulating te sɛ magnesium oxide a ɛwɔ baabi a ɛyɛ hyew kɛse na ogya ntumi nhyew no di dwuma. Nanso, nneɛma a ɛma mineral insulating no yɛ sintɔ biako ne wɔn hygroscopicity a emu yɛ den, a ɛma ɛyɛ mmerɛw sɛ ɛbɛtwe nsu afi mframa mu. Sɛ nhama a ɛbɔ ho ban no twetwe nsu kɛse bi a, ɛka ne ho a ɛyɛ adwuma no, na ebetumi atew ogya a ɛko tia ne anyinam ahoɔden a ɛwɔ nhama no mu no so .
2. Wɔansɔ nhama no mu nneɛma bi ansi so denneennen. Nsuo anaa nsuo bɛhyɛn cable insulation layer no mu afiri cable end anaa cable protective layer no mu, na afei akɔhyɛ cable no mu biara mu, na ɛnam so asɛe tumi nhyehyɛeɛ no nyinaa.
