Careby

When this row of houses were built, the bit of land where the 25kV feed lines for the railway convert from overhead to underground was sold to the end house.

Two separate 25kV single phase lines from Bourne East substation to the East Coast Main Line at Little Bytham, striding out of the Grimsthorpe estate and across a field.

The plant known as "Chinese Lantern" among garden centres is not native to the UK, and we are a little cold for it really. But here it is growing in a hedgerow by the road, probably as a garden escapee. There are individuals on the other side of the road too.

One of the patches of Physalis alkekengi growing in the roadside hedge. (see TF0117 : Physalis alkekengi).

One of the cubicles erected to bring high-speed internet to the country.

Hawthorn berries, or haws, in a hedge.

The use of overhead power distribution in these villages is not unusual. But this one is. What is it feeding? It is in the garden of one of the 4 houses build on the former goods yard of Little Bytham station (itself an oddity, because it is in the parish of Careby, not Little Bytham). The pole predates the houses by at least half a century. It is one end of a run of overhead wiring in the village (three phases plus neutral) and all four wires are terminated on this pole to cables that go underground. Normally that would be 3 phase and neutral, but it is not - it is two two-wire circuits (each of Live & Neutral) if you track the distribution past the pub to the end of the village. This is the infeed end - hence the 4 terminations. It appears to feed the rest of the village, but not the 4 houses here. So where do we find two separate phases? Why, on the poles in the background that bring two 25kV phases from Bourne West to the railway. There must be, somewhere out of sight, a substation that steps that 25kV down to 240V for the older homes in the village - and perhaps the new ones, too, albeit underground. See TF0117 : Warning label which implies this assumption is correct.

The conjecture in TF0117 : Odder than it looks that the village is fed via the supply to the railway system is amply borne out by this notice on the pole, which says "East Midlands Electricity If delivering shutdown cards to this location please contact Engineering Clerical immediately. In the case of emergency for connection of supply contact British Rail on 01 340 2785 or 01 348 9542" Both telephone numbers are, of course, decades out of date.

If you look at TF0117 : 25kV in the garden and TF0117 : 25kV single phase you will see that there are two groups of four wires coming from the power station at TF0619 : Bourne West electricity sub-station. This is the 25kV supply for the railway overhead power. So here are four of the wires. The top two are bridged together, and connected to a downfeed cable through the large insulator (TF0117 : Feed-through insulator). This is a single phase 25kV line. The other two are also bridged together, and connected to a much lighter downfeed. These are the Neutral, which is essentially at earth potential on the running rail. The other 25kV on the other set of posts is arranged in the same way. Railway infeeds are complex, often providing a split-phase "supply" and "feeder" which combined with trackside autotransformers can reduce the longitudinal volt drop. It is likely that these two are set up in the same way - one being the infeed and one the feeder, with 120 degree phase shift (a consequence of the conversion from three-phase at the substation).

The large cable interface and feed-through insulator for the incoming 25kV seen in TF0117 : Wiring details, showing how it is bonded to both the upper wires

Looking north, where Station Road comes out from the arch of the former Midland and Great Northern line, which crossed the East Coast Main Line on an elevated bridge.

A flash of late afternoon low angle sunlight.

The giant Great Northern Railway viaduct looms large in this small village, and still carries the main East Coast line. It appears to be built of blue engineering brick. I haven't found a date beyond that it is Victorian.

Quite an imposing country pub which originally lay close to a railway station (TF0117 : The Willoughby Arms at Little Bytham, near Bourne, Lincolnshire).

Looking through the road arch of the magnificent Victorian railway viaduct that carries the 4-track East Coast Main Line over the village TF0118 : Railway Viaduct, Little Bytham. The spire of the Church of St. Medard and St. Gildard is in the distance.

Sections 47-50 of the 2000 Act introduce a new category of highway called the “restricted byway”. A restricted byway is defined as a highway over which the public have restricted byway rights, with or without the right to drive animals of any description. This replaced the concept of a "road used as a public path". This track is a restricted byway. See TF0214 : Restricted Byway sign. A little further on is the camp for one of the wire-pulling bases used to re-string the 400kV line through Lincolnshire