Hi to the forum
This is my first post on here; I am a semi-retired (due to my knees being knacked.) Worked most of my 40 years on the domestic side ie rewires, kitchens, central heating etc not a lot on three phase. Been asked now by a mate to upgrade electrics in a shop premises, the upgrade presents no problem to me. The premises have a three phase TN-S supply. The only three phase apparatus is a buffing and polishing machine (the shop is a key cutting and heel bar) Machine is on rolling maintenance contract with manufacturer. There is 8 way cu supplied by single phase + N from three phase meter I will be replacing this old cu during rewire of shop. what I would like to ask-- do I issue two separate certs 1 for the rewire and new cu and 1 for the three phase supply which goes from meter to machine isolator or do I test it all as three phase with a note and test results for the single phase supplied circuits. Any advice will be gratefully accepted. Alex
This is my first post on here; I am a semi-retired (due to my knees being knacked.) Worked most of my 40 years on the domestic side ie rewires, kitchens, central heating etc not a lot on three phase. Been asked now by a mate to upgrade electrics in a shop premises, the upgrade presents no problem to me. The premises have a three phase TN-S supply. The only three phase apparatus is a buffing and polishing machine (the shop is a key cutting and heel bar) Machine is on rolling maintenance contract with manufacturer. There is 8 way cu supplied by single phase + N from three phase meter I will be replacing this old cu during rewire of shop. what I would like to ask-- do I issue two separate certs 1 for the rewire and new cu and 1 for the three phase supply which goes from meter to machine isolator or do I test it all as three phase with a note and test results for the single phase supplied circuits. Any advice will be gratefully accepted. Alex
