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Milliken E102

Contents

Overview

E102 is a 33 kV distribution tower type designed by Milliken Brothers for the 1929 Mid-East England (MEE) contract SL1 in the Lincolnshire area. The same towers appear to have been used in the SEE area also.

General data

Designed for CEB
Design contract Milliken Brothers E102
Height (straight line tower) 46′–6″ (S3)
Voltage 33 kV
Dates back to 1929–31 (drawings)
Known conductors Single
Design conductor ?
Design earthwire ?
Circuit count Single; double?
Drawing ranges E102 / LT1929

Lines

Possibly no complete MEE SL1 lines exist. Extant lines using E102 towers include:

Lines known to have been demolished:

Tower forms

Only material for single circuit towers has been recovered to date. The former junction tower in Ashtead (now functioning as an S90) matches the tower type suspected to be the double-circuit equivalent, but attempting to scale depictions of these towers on Google Street View to the single circuit tower clearances failed.

The following diagrams are shown to scale at 12 pixels per metre:

Milliken E102 S3
Milliken E102 S20
Milliken E102 S60
Milliken E102 S60 GPO crossing
Milliken E102 ST

With earthing arms (derived from Google Street View only):

S3 with earthing arm

Examples

Pending.

Tower details

Base width for the S3 is the bend line, which is just above top of concrete.

Type Source Height Base width Overall width
S3 LT1929-22C 46′–6″ (14.2 m) 5′–0″ (1.5 m) 13′–6″ (4.1 m)
S20 LT1929-24B 42′–9″ (13.0 m) 9′–0″ (2.7 m) 13′–6″ (4.1. m)
S60 LT1929-27C 42′–9″ (13.0 m) 12′–6″ (3.8 m) 17′–6″ (5.3 m)
S60 GPO crossing LT1929-58B 24′–0″ (7.3 m)
ST LT1929-27C 13′–9″ (4.2 m)
Vertical phase clearances
Tower type Peak to top crossarm Top to middle crossarm Middle to bottom crossarm Bottom crossarm to ground
S3 2′–4″ 3′–9″ 3′–9″ 36′–8″
S20, S60, ST 3′–0″ 3′–6″ 3′–6″ 32′–9″