Foro minnu bɛ ji la, olu bɛ tila tila ka kɛɲɛ ni elekitorode labɛncogo ye ka kɛ suguya fila ye: minnu ka elekitorode labɛnna kɛrɛ saba la (foroba minnu bɛ kɛ sɛrɛkili ni kɛrɛ saba ye) ani minnu ka forow labɛnna sira tilennen na (foro kɛrɛnkɛrɛnnenw ni foroko minnu bɛ kɛ kɛrɛ saba ye). Misali minnu bɛ yen olu ye foro lamininenw ye (i n’a fɔ forow minnu bɛ kɛ ni nɛgɛ ye) ani foro kɛrɛnkɛrɛnnenw (i n’a fɔ forow minnu bɛ kɛ ni matɛri ye).
Ni i y’a suma ni foro kɛrɛnkɛrɛnnenw ye, foro lamininenw bɛ nin jogo ninnu jira:
1) Elektɔri saba labɛnna kɛrɛ saba ye min bɛ kɛ ɲɔgɔn fɛ, o bɛ na ni fasa saba- doni (baarakɛbaliya) ni fanga tilali ye min bɛ bɛn ɲɔgɔn ma;
2) Funteniba-yɔrɔ bɛ ɲɔgɔn sɔrɔ kosɛbɛ, o b’a to foro kɔnɔna yɔrɔ (elektɔri saba cɛ) ka se funteni caman ma;
3) Foro kogo funteni-dissipation surface area per unit cross-section of the molten pool ka dɔgɔn; o tɛ dɔ bɔ funteni bɔnɛ dɔrɔn na nka a bɛ sira di fana fanga-dabila waati janw ma;
4) Foro farikolo bɛ se ka wuli ni masin ye walasa fɛnw ka taa ka ɲɛ ani ka taa foro kɔnɔ.
Ni i y’a suma ni foroko lamininenw ye, foro kɛrɛnkɛrɛnnenw bɛ ni nin jogo ninnu ye:
1) Foro jɔcogo ka nɔgɔn kosɛbɛ, wa kuran-mekaniki minɛn dɛmɛnanw (transformateurs, chargement et déchargement machines) labɛncogo ka nɔgɔn kosɛbɛ;
2) U bɛ se ka elekitorode wɔɔrɔ ladon, o la, u bɛ sɛnɛyɔrɔ bonya;
3) Elektɔriw bɛ dankarili dɔɔnin kɛ fɛnw lamagacogo la, o b’a to gazi minnu bɛ bɔ sɔgɔli waati la, olu bɔli nɔgɔya;
4) Funteni danfara minnu bɛ jidagayɔrɔ wulilen kɔnɔ, olu ka dɔgɔn, o bɛ kɛ sababu ye ka yɔrɔ dɔw funteni caya kojugu.
Foro rectangulaire bɛ kɛ ka baara dɔw kɛ i n’a fɔ matte smelting, calcium carbide dilanni, ani ferromanganese dilanni. Ferroalloy foro fanba ye sɛrɛkili ye; foro lamininenw fana bɛ kɛ nɛgɛso la min tɛ-nɛgɛ ye, misali la, nikɛri ɔkisidi sɛnɛfɛnw ni kobalt sɔgɔli la.
Foro min bɛ ji la, o ye foro sugu dɔ ye min bɛ kɛ ka fɛnw sɔgɔ; foro farikolo hakɛ minnu ka gɛlɛn kosɛbɛ, olu ye jidagayɔrɔ wulilen ta ye-kɛrɛnkɛrɛnnenya la a janya, a bonya (walima a cɛmancɛ), ani a juguya. Ikomi o forow bɛ u jigi da kuran kan fɔlɔ walasa ka sumaya, jidagayɔrɔ min wulilen don, o bɛ kɛ hakilina ta fan fɛ i n’a fɔ yɔrɔ ɲuman min bɛ se ka kuran fanga caman tigɛli kɛ funteni ye; o de kosɔn, a ka c’a la, jidagayɔrɔ wulilen hakɛw ye elekitorode cɛmancɛ caman ye.
A ka c’a la, foro kɛrɛnkɛrɛnnenw bɛ kɛ ni foro sanfɛla ye, wa u bɛ baara kɛ i n’a fɔ fɛn datugulenw; u hakɛ fɔlɔw ye jidagayɔrɔ wulilen janya, a bonya ani a juguya ye, ka fara elekitorodew cɛmancɛ-ni{1}}cɛmancɛ ni foro so janya kan.