Central New Works Juice Rails.

very interesting. Could someone enlighten me as to what substation feeder panels and posts look like, and where exactly they are located? In another thread I also saw mention of "disconnection panel", presumably something very similar?

There must have been a block of numbers issued to each line; however, this merits further research.

I don't know where or when the numbering started, but if you look at Part of 1924 peril you can see that there was a series beginning at '1' at Camden Town. I wouldn't like to state that this was the definitive start of cumulative section switch numbering, without doing much more digging.

In the scans I'm fairly sure that the numbers are in a contiguous series from Liverpool Street eastwards. Unfortunately the paper copies of what might give me the information for the rest of the network is currently securely packed away; however, I might have some arbitrary notes left in the filing cabinet in Wales or on my computer (which is also over the border); I can remember looking at it some while ago and seeing that there were 'blocks' of numbers allocated to each line - but nothing more than that.

These days the suffix '^A' has the same meaning, that of the negative; motorised section switches have a four figure [1] number with the prefix 'M' - eg. M1001 with no '^A', because for practical purposes they are single-acting, rather than a switch for each polarity.

[1] are there any 3-figure motorised switches anywhere?

In the 1970s the RTC taught that section switches always had 3-figure numbers but, in the 'real world'', I found there were/are 2-figure ones on the Met.

There is a No 10 at Harrow bit of a jump down as other switches are higher.

From start of traffic Monday 22nd March 1993