Hi,
Could anyone please advice me which Maximum earth fault loop impedance tables are to be used for the Dorman Smith mcb's. The mcb's do not have anything witten on them apart from the ampage ratings. They are fitted in a Dorman Smith CU, which is metal and very old. The consumer unit has a label which says "Dorman Smith, Series 15, BS 5486 part 13". I think the mcb's are the Loadmaster Type LM series 15.
Any help would be appreciated.
Harry
Could anyone please advice me which Maximum earth fault loop impedance tables are to be used for the Dorman Smith mcb's. The mcb's do not have anything witten on them apart from the ampage ratings. They are fitted in a Dorman Smith CU, which is metal and very old. The consumer unit has a label which says "Dorman Smith, Series 15, BS 5486 part 13". I think the mcb's are the Loadmaster Type LM series 15.
Any help would be appreciated.
Harry