Specifications

T400 Controller Facilities Manual
667/EB/20200/000 Page 24-1 Issue 9
24. GAS PLINTH
24.1 GENERAL DESCRIPTION
A gas plinth can be fitted below the controller to prevent ground-permeating gases
from entering the controller; the gas is allowed to escape via the vented plinth. All
cables entering into the controller must pass through the gas plinth with cable glands
being used to seal the cables. There is a maximum number of cables which can enter
the controller when a gas plinth is used, as detailed below:
Small case controller - 18 cables (Including electrical supply)
Large case controller - 27 cables (Including electrical supply)
If required, a Cable Earth Termination (CET) may be used to support and terminate
the cables inside the Controller. This method of termination is shown on the drawing
667/GA/21150/etc.