NR NR/L3/SIG/11303/1D05 ISSUE 2 PDF

Introduction

As an Installer, the electrical installation diagrams you may use fall into the following categories:

• Plans and Schematics

• Circuit Diagrams and associated information

• Signal Sighting Forms

• Control Tables

• Other Engineering Details and Schedules 

A complete list, telling you where to find more information about each type is given in Figure 1.

Diagrams supplied to you for installation work should be stamped INSTALLATION COPY and carry both drawn and checked initials and an issue date. The only exception to this rule is for diagrams which have been colour plotted from a Computer Aided Design system, in which case a single set of initials signify that the original has been checked and the colouring is correct. Any design details that are unchecked and issued for preliminary information, or material ordering, etc., will be stamped PRELIMINARY COPY or DRAFT COPY and will carry an issue date.