What is the minimum safe distance that you should be from the Overhead Wire system?
9ft, or cab floor level
What is the Voltage in the Overhead Wires?
25000 Volts
What are the three main types of Overhead Wire structures?
Cantilever, Portal and Wirehead Span
Which Overhead Wire Structure only spans one line
Cantilever
Which Overhead Wire Structures spans more than one line?
Portal and WireHead Span
What is the Bottom Wire of the Overhead Wires known as?
Contact Wire
What is the Top Wire of the Overhead Wires known as?
Catinery Wire
Which wire joins the Catinery to the Contact within the Overhead Wire System?
Dropper Wire
What is the name of the Wire that runs along the side of the OHL Structures?
Along Track Conductor
Who controls the Overhead wire system?
ECO, (Electrical Control Office)
How would you contact the ECO in an emergency, from either a BR Telephone or via the NRN?
176 on a Staff Telephone
What is the minimum position of safety where the line speed is 100 m.p.h. or less?
4ft
What is the minimum position of safety where the line speed is over 100 m.p.h.
6ft 6inches
When walking on or near the Running Line which direction should you walk?
Where possible it should be facing into Oncoming traffic, in the Cess
What information does the Individual Structure Plate give you in Overhead Lines area?
The route it is on, Miles from the Source and the structure number
What does a Blue and White Chequered board denote?
No refuge at this location
Describe a Limited Clearance Board.
A red and white chequered board, with a warning label in the top left corner, and Limited clearance in the bottom right corner
How is a lineside telephone identified?
With a large black St Andrews Cross on a White background
In an area where there are four tracks what do we call the space between both sets of tracks?
The 10ft
In a Two-Track layout what is the space between the tracks known as?
6ft
If you were caught in a area of Limited Clearance and you could not get to a position of safety what must you do?
Lie down in the 6ft, bringing all items to ground level and gathering/securing any loose clothing
What is the definition of on or near the Running Line?
On the Line itself or within 3m of the nearest rail of any line
What is the definition of on the lineside?
Within the area between the railway boundary fencing and the point that is called ‘on or near the line’.
If on the line side how would you acknowledge the audible warning from an approaching train?
Get to a position of safety and raise one arm above head
