sparkss
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Evans electrical asked about live cutout changes, heres our guidelines for it, thought id share it with you all better suited to a seprate thread 
General requirements for replacement of cut-outs
This document covers the precautions necessary for the removal of either insulated
or metal clad single or three phase cut-outs and replacement with single or three
phase cut-outs of the insulated type. In view of the variety of types of cut-out in use
in the Company, the following are not intended to cover any specific makes and
types of cut-out, but are intended for general guidance only.
Replacement of Three Phase Cut-Outs
NO three phase cut-outs, either metal clad or all-insulated, shall be
changed with the service live in ANY circumstances. The service cable
MUST be cut outside the property and the cut out changed under dead
conditions.
Pre and post work polarity and phase rotation checks should be completed in
accordance with Module 12.
Replacement of Metal Clad Cut-Outs (Including Single Pole Fuse-Units).
No attempt should be made to replace this type of cut-out with the
service live. The service cable MUST be cut outside the property and the
cut out changed under dead conditions.
Pre and post work polarity checks should be completed in accordance with
Module 12.
Changing of All-Insulated Cut-Outs up to and Including 100 Amps
The changing of all insulated single phase cut-out patterns up to 100 amps
rating can be carried out under live conditions provided the conditions given in
the General section below are satisfied.
Where an insulated cut-out is to be replaced, no attempt shall be made to
use, or re-use, a rubber cover (
General requirements for replacement of cut-outs
This document covers the precautions necessary for the removal of either insulated
or metal clad single or three phase cut-outs and replacement with single or three
phase cut-outs of the insulated type. In view of the variety of types of cut-out in use
in the Company, the following are not intended to cover any specific makes and
types of cut-out, but are intended for general guidance only.
Replacement of Three Phase Cut-Outs
NO three phase cut-outs, either metal clad or all-insulated, shall be
changed with the service live in ANY circumstances. The service cable
MUST be cut outside the property and the cut out changed under dead
conditions.
Pre and post work polarity and phase rotation checks should be completed in
accordance with Module 12.
Replacement of Metal Clad Cut-Outs (Including Single Pole Fuse-Units).
No attempt should be made to replace this type of cut-out with the
service live. The service cable MUST be cut outside the property and the
cut out changed under dead conditions.
Pre and post work polarity checks should be completed in accordance with
Module 12.
Changing of All-Insulated Cut-Outs up to and Including 100 Amps
The changing of all insulated single phase cut-out patterns up to 100 amps
rating can be carried out under live conditions provided the conditions given in
the General section below are satisfied.
Where an insulated cut-out is to be replaced, no attempt shall be made to
use, or re-use, a rubber cover (
