Editing Bakerloo line (section)

===Electricity supply===
One oddity is that, almost from its opening until 1917, the Bakerloo operated with the polarity of the [[Third rail|conductor rail]]s reversed, the outside rail negative and the centre rail positive. This came about because the Bakerloo shared a power source with the [[District Railway]]. On the Bakerloo, the outside conductor rail tended to leak to the tunnel wall, whereas on the District Railway, the centre rail shared a similar problem. The solution was to reverse the polarity on the Bakerloo line, so that the negative rail leaked on both systems.<ref>{{cite web |title=Bakerloo Line, Dates |url=http://www.davros.org/rail/culg/bakerloo.html#dates |url-status=live |work=Clive's Underground Lines Guide |access-date=13 January 2008 |archive-url=https://web.archive.org/web/20080126103530/http://www.davros.org/rail/culg/bakerloo.html |archive-date=26 January 2008}}</ref> In 1917, the two lines were separated when the LNWR began its 'New Line' service between Euston and Watford Junction, which the Bakerloo would share north of Queens Park. As a result, normal operation was restored.