"Paul Corfield" wrote in message
...
On Fri, 30 Nov 2012 08:44:45 +0000, Roger
wrote:

Why? Queens Road Peckham to Clapham Junction is DC. Have they
put some AC between Surrey Quays and Queens Road Peckham?

Weren't the additional trains for the SLL service dual voltage units?
Bringing them into daily service means more dual voltage units on the
ELL service overall.

Correct. All the units ordered after the initial two subfleets were dual
voltage, whatever the reason for the numbers required. This was discussed
here firstly at the time the Highbury extension batch were ordered, and
again when TfL announced that the last batch would also be dual voltage,
IIRC this was the three additional units needed to take over the SLL.

Paul S