This is the list of errors which exist in the hardback printed 6th edition.

Page 6, figure 3 was taken at Bow Junction, not Bethnal Green.

This is the list of errors which exist in the free PDF download 6th edition.

Page 6, figure 3 was taken at Bow Junction, not Bethnal Green.

Page 58, figure 62 – touch potentials are shown at the top of the diagram, and step potentials below; not the other way around as suggested by the caption.

Page 59, figure 65 – the signalling rail is labelled incorrectly. The correct diagram is below:

Page 117 should read:
” these systems use a triple cantilever… on the same principle as the double cantilever. The double cantilever illustrates the important principle…”

Page 162 should read:
“…where a resistance is switched into the OLE circuit…”

Page 234 should read:
“This section focuses on the general principles…”

This is the list of errors in the hardback printed 5th edition.

Page 45, figure 28 – this circuit breaker uses Nitrogen, not SF6 as an insulating medium.

Page 46, figure 30 – this cable is not armoured. The outer layer of copper is a sheath, not armour.

Page 58 states that “MSCs in the UK are typically PVC sheathed 19/4.22 Aluminium cable…”. In fact it is typically 19/4.22 cable.

Page 63: “Similarly, circuit breaker C A will act if circuit breaker B does not.”

Page 80, sentence should read:
“This is because DC stray currents can be especially damaging to the running rails…”

Page 91, sentence should read:
“The key interface to be considered in OLE design is that of the contact wire…”

Page 91, figure 84 – label “raising cylinder and primary insulation” should read “raising cylinder and primary suspension”

Page 149, sentence should read:
“A variant of this design, used for more highly loaded masts…”

Page 171, figure 200 was taken at St Pancras, not Kings Cross

Page 176 states that “19/3.25 Al (with a PVC sheath) is also used for MSCs and RSCs…”. In fact it is 19/4.22 cable that is used. Figure 207 also erroneously references 19/3.25 cable as RSC.

Page 178, sentence should read:
“These comprise a very large number of small diameter strands – usually copper – which are woven into ropes…”

Page 216: 31 people died in the accident at Ladbroke Grove, not 30 as stated.

Page 235, sentence should read:
“Measurements taken during these tests include rise in earth potential, feeder current, fault clearance tomes times and return current paths…”

Appendix D:
Series 1 equipment is listed as using Copper Tin (CuSn) contact wire. In fact it uses Copper Silver (CuAg) contact wire.