Design Guide For Feeder Pillars & Pre-Wired Electrical Equipment
Published 20 Sep 2018

Feeder Pillars
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uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Feeder Pillars
The following information is required by Lucy Zodion to enable the design and specification of feeder pillars to provide LV Electricity Distribution – utilising Fortress type steel pillar enclosures available in galvanised or stainless steel the power distribution pillars can be customised by an in-house Electrical Engineering Team to client and project requirements.
Thorne & Derrick have partnered with Lucy Zodion to provide a free technical support and electrical circuit design service – this includes internal wiring, 3D modelling and pillar schematics using AutoCAD software which is submitted to client for final approval prior to manufacture of the pre-wired electrical distribution pillar.
Effectively a “plug and play” solution to on-site power distribution – alleviating the design stress and cost from the contractor as the pillars are manufactured off-site without requirement to assemble the components and carry out internal wiring to ensure the project programme continues without disruption or delay.
Typically, the following information is required to generate the design of the feeder pillar in either single phase or 3 phase.
Electrical Specification
- DNO/REC Equipment
- DNO/REC Space Required
- Incoming Supply: 1 Phase | 3 Phase
- Cable Size Type Specification: Single | Multicore | Armoured SWA | Unarmoured | Voltage | Conductor Cross Section sqmm
- Incoming Isolation: SW Fuse | SW Disconnect | None | Amp Rating
- Distribution Board Type: Single Phase | 3 Phase | None
- Distribution Board Notes
- Number Of Outgoing Ways:
- Type: SP | TP
- Outgoing Way Protection Devices:
- Number Of BS88 Fuses:
- Number Of RCBO’s:
- Number Of MCB’s:
- Are Outgoing Terminals Required:
- Direct Connect To Distribution Board:
- Outgoing Cable Sizes:
Group Switching
- Time Clock: Normal | Solar | Analogue | Digital
- Contractor Control: Incoming Supply | Outgoing Ways
- Number Of Outgoing Ways Switched:
- Override Switch: Yes | No
Feeder Pillar Extras
- Light
- RCD Socket
- Heater
- Normal Thermostat
- Tamperproof Thermostat
- Commando Sockets
- DC Immune RCD
- Cat Flap
- Feeder Pillar Details
- Minimum Pillar Size: Height | Width | Depth
- Maximum Pillar Size: Height | Width | Depth
- Lucy Fortress Feeder Pillar Part Code (if known)
The safe electrical isolation and termination of low voltage cables all feeder pillars can be supplied with earth bars mounted to the backboard – pictured here is an 8 way earth bar terminating LV green-yellow insulated earth cables 600/1000V.
💡 The Lucy Westminster range of retractable pillars provide “pop-up power” onsite, outside and on demand when temporary electricity is required.
Type Tests Of Feeder Pillars
Prior to factory despatch and in line with electrical testing according to standard BS EN 61439 all mechanical and electrical cable terminations and connections are checked before despatch of the distribution pillars.
Once delivered to site it is recommended the installation guide is observed and if any technical queries arise please do not hesitate to contact us – check all terminal connections prior to energisation or commissioning to ensure no cable compression, damage or loosening of the connections has occurred during transportation or installation.
Should you require any commercial or technical support relating to the design, supply and installation of pre-wired feeder pillars please contact us.

Cut Outs – Lucy Zodion DNO Approved Street Lighting Cut Outs
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We provide expert technical support and supply from a multi-million pound stock holding:
Cable Joints, Terminations & Connectors | Earthing & Lightning Protection |
Cable Accessories, Lugs & Glands | Circuit Protection & Fuses |
Cable Cleats & Clamps | Electrical Safety Equipment |
Cable Pulling & Laying Equipment | Arc Flash Clothing & Protection |
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Read our Blog with Lucy Zodion: Cut-Outs & Isolators – What’s the Difference?