Ko te turuturu whenua ko te ia e tae atu ana ki te whenua mā te ara kāore i whakaarohia. E rua ngā wāhanga: ko te turuturu whenua kāore i te whakaarohia nā te korenga o te whakamarumaru, te pakaru rānei o ngā taputapu, me te turuturu whenua ā-whakaaro nā te hoahoa o ngā taputapu. Tērā pea he āhua rerekē te turuturu "hoahoa", engari i ētahi wā kāore e taea te karo - hei tauira, he maha ngā wā ka puta he turuturu mai i ngā taputapu hangarau mōhiohio ahakoa kei te mahi tika.
Ahakoa te pūtake o te turuturu, me ārai kei puta he ru hiko. Ko te tikanga o tēnei mahi he whakamahi i te RCD (pūrere tiaki turuturu) te RCBO rānei (kaiwawao ara iahiko turuturu me te tiaki iahiko nui). Ka inehia e rātou te iahiko i roto i te ara iahiko, ā, ka whakatauritea ki te iahiko i roto i te ara iahiko kūpapa. Mena ka nui ake te rerekētanga i te whakatauranga mA o te RCD, o te RCBO rānei, ka whati.
I te nuinga o te wā, ka mahi te turuturu kia rite ki te mea e tumanakohia ana, engari i ētahi wā ka haere tonu te RCD, te RCBO rānei ki te piko me te kore take - he "piko whakarihariha" tēnei. Ko te huarahi pai ki te whakaoti i tēnei raruraru ko te whakamahi i tētahi mita rawhi turuturu, pērā i te Megger DCM305E. Ka herea tēnei ki te waea me te ara iahiko korekore (engari ehara i te ara iahiko tiaki!), ā, ka ine i te iahiko turuturu whenua.
Hei whakatau ko tēhea ara iahiko i puta ai te pakaru hē, whakawetohia ngā MCB katoa i roto i te waeine kai hiko, ka whakanoho i te rawhi turuturu whenua ki te taura hiko. Whakakāhia ia ara iahiko i ia wā. Mena ka nui ake te turuturu, tera pea he ara iahiko raruraru tēnei. Ko te mahi e whai ake nei ko te whakatau mena i āta whakaarohia te turuturu. Mena koinā, me whakamahi i tētahi momo horapa kawenga, i tētahi momo wehenga ara iahiko rānei. Mena he turuturu kāore i āta whakaarohia—te hua o tētahi pakaru—me kimi me whakatika te pakaru.
Kaua e wareware ko te raru pea he RCD, he RCBO rānei kua hē. Hei tirotiro, me whakamātautau i te arawhata RCD. Mō te taputapu 30 mA - te whakatauranga tino noa - me whati i waenga i te 24 me te 28 mA. Mena ka whati me te iti o te iahiko, me whakakapi pea.