A Kaiwhatu Arahikohe taputapu whakawhiti ka taea te tapahi aunoa i te iahiko ina pāngia te ara iahiko e te taumaha rawa, te ara iahiko poto, ētahi atu āhuatanga rerekē rānei, hei tiaki i te ara iahiko me ngā taputapu. E ai ki te taiao whakamahinga, te mātāpono mahi me te taumata ngaohiko, ka taea te whakarōpū anō i ngā kaiwawao ara iahiko ki ētahi momo:

Whakarōpūtia e te ngaohiko mahi
Ngā whati hiko iti-ngaohiko (LV): E whakamahia ana i roto i ngā hiko whare, arumoni me ngā hiko ahumahi māmā, me te ngaohiko whānui kāore e neke ake i te 1000V. Ko te nuinga o ēnei he tiaki i ngā hiko me ngā taputapu hiko. Ko ngā momo noa ko ngā whati hiko iti (MCB) me ngā whati hiko pouaka pokepoke (MCCB).
Ngā pūwā hiko hiko teitei (HV): E whakamahia ana ēnei i roto i ngā pūnaha ahumahi, tuku hiko me te tohatoha, ā, ko ngā ngaohiko he nui ake i te 1kV. Ka taea e rātou te tapahi i ngā iahiko nui me te tiaki i te haumaru o ngā whatunga hiko. Ko ngā momo noa ko ngā pūwā hiko hinu, ngā pūwā hiko hau-hau (GIS), me ngā pūwā hiko korehau.
Whakarōpūtia mā te tikanga tinei pewa
Pūwhakaweto hiko hau (ACB): E whakamahi ana i te hau hei reo tinei pewa, ā, he pai mō ngā hiko ngaohiko reo me te iti.
Pakaru ara iahiko korehau (VCB): Ka oti te tinei i te pewa i roto i te taiao korehau, he pai mō te mahi auau teitei me te roa o te ora mahi.
Pūwhakaweto hiko hinu (OCB): E whakamahi ana i te hinu hei arai tinei pewa, ā, he pai mō ngā raina hiko ngaohiko teitei.
Pūwhakaweto hiko hau (SF6 CB): Te tinei i te mura ahi me te hau whanariki hexafluoride, he mea tika mō ngā pūnaha ngaohiko teitei me ngā pūnaha ngaohiko tino teitei.
Whakarōpūtia mā te whakamahinga
Pūwhakaweto ara iahiko tiaki: He mea whakamahi nui mō te tiaki i te taumaha me te ara iahiko poto.
Pūwhakawhiti ara iahiko momo-mana: E whakamahia ana mō te whakahaere whakaweto-whakakā o ngā ara iahiko, ā, he mahi tiaki anō hoki.

Ehara i te mea ka tiaki noa ngā kaiwawao hiko i ngā taputapu hiko mai i te kino, engari ka whakarite hoki i te haumaru o ngā kaimahi, ka whakarei ake i te pono me te pumau o te whakahaere pūnaha, ā, he wāhanga matua nui hoki i roto i ngā pūnaha hiko hou me te aunoatanga ahumahi.