scope:

Purpose

This Earthing and Bonding specification is unique to the North Pole Depot area and the section of the West London Lines between West Way and Mitre Bridge Junction, it should be read in conjunction with the Specification of Earthing and Bonding for A.C. Electrified Lines EHQ/SP/D/101 which contains general information regarding standard bonding practices, cable sizes, use of spider plates etc.

There are 3 different types of electrification within the North Pole International Depot complex :

1. 25kV 50Hz a.c. Overhead Line Conductor System

2. 660V d.c. 3rd Rail Conductor System

3. 3,000V d.c. Overhead Line Conductor System