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Ọla kọpa siri ike na igwe anaghị agba nchara Earth Rod-CER
Ala ọla kọpa siri ike na-eme ka ihe na-eguzogide corrosion ka ukwuu.A na-eji ha eme ihe na ngwa ebe ọnọdụ ala dị oke egwu, dị ka ala nwere nnukwu nnu.
Ngwa gụnyere mkpanaka, ịnya isi njikọta dowel, ịnya ụgbọ ala iji mee mkpanaka 8 ft.Njikọ na mkpanaka nwere ike ịbụ site na nchikota igwe, mkpakọ.
Ọkọlọtọ: BS EN 50164-2, BS7430, UL467