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Design Standards

Please use the categories below to help you find the correct information:

Unmetered
Streetlighting
Low Voltage
11,000 Volt
33,000 Volt
66,000 Volt
​132,000 Volt

SD5P/3

19/04/2018

Design of Unmetered Connections.
 

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WPD G81 Part 1

12/12/2012

Housing Development Design framework.

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TP21E/1

27/08/2014

Provision of WPD Earth Terminals to Customer LV Installations.
 

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CAØB/1

13/12/2012

Procedures for Changing Domestic 100A Cut-Outs with the Incoming LV Service Cale Live.

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CAØM/4

11/02/2016

Procedures for Making LV Service Cable Branch Joints.
 

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CAØN/2

09/10/2014

Procedures for Making LV Service Cable Stop Ends.
 

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CAØU/2

09/10/2014

Procedures for Making LV Service Cable Cut-Out Terminations.
 

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CAØV/2

09/10/2014

Procedures for Making LV Service Cable Straight Joints.

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CAØW/1

12/12/2012

Procedures for Changing Street Lighting Cut-Outs with the Incoming LV Service Cable Live.
 

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SD5P/3

19/04/2018

Design of Unmetered Connections.

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WPD G81 Part 1

12/12/2012

Housing Development Design framework.

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TP21E/1

27/08/2014

Provision of WPD Earth Terminals to Customer LV Installations.
 

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CA1AB/1

12/12/2012

Procedures for Making Low Voltage Mains Three Core Wavecon Connection/Disconnection Joints.

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CA1C/8

03/02/2017

General Requirements Low Voltage Mains Jointing.
 

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CA1D/4

21/12/2012

Procedures for Making Low Voltage Mains Cable Straight Joints.
 

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CA1E/4

09/07/2013

Procedures for Making Low Voltage Mains Cable Branch Joints.

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CA1F/3

12/12/2012

Procedures for Making Low Voltage Mains Cable Stop Ends.

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CA1G/6

08/07/2014

Procedures for Making Low Voltage Mains Cable Terminations.

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CA1H/6

27/08/2014

Procedures for Making Low Voltage Mains Cable Disconnecting Boxes.

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CA1I/4

12/12/2012

Procedures for Making Low Voltage Mains Cable Service Branch Joints.

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CA1U/2

12/12/2012

Jointing of Paper Insulated Concentric and Triple Concentric Mains Cable.
 

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CA1Y/1

12/12/2012

Procedures for Making Low Voltage Mains Cable Loop Joints.

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MI14D

13/12/2012

Earth Loop Impedance Testing of Services.
 

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SD5A/3

19/01/2018

Design of Low Voltage Domestic Connections.
 

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SD5C/2

11/05/2016

Low Voltage Connections to Multiple Occupancy Buildings.
 

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SD5D/2

27/06/2013

Arrangements for LV Cut-Outs.

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SD5R/2

19/01/2018

Earth Fault Loop Impedances and Phase to Neutral Loop Impedances at LV Installations.
 

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TP21D/2

21/10/2015

11kV, 6.6kV and LV Earthing.

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WPD G81 Part 1

12/12/2012

Housing Development Design framework.
 

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NC2D/2

05/03/2014

Specification of Connection Assets.

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TP21E/1

27/08/2014

Provision of WPD Earth Terminals to Customer LV Installations.
 

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SD5/4

25/02/2015

LV System Design.

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EE132

28/08/2015

Earthing Materials and Associated Sundry Items.

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SD5B

17/09/2015

Low Voltage Connections with Minimal Network Analysis.

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SD5K/6

19/04/2018

Use of WinDebut Software.

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SD1F/2

03/06/2016

Competition in Connections Code of Practice (COP) - Procedure for network analysis by Independent Connection Providers (ICPs).

 

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SD1F/2 + Audit Form

03/06/2016

SD1F/2 - Point of Connection & Contestable Design Audit Form (hyperlinked to SD1F/2 - page 10).

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SD7A/7

19/04/2018

Data Sets Used with Windebut Software.
 

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SD6J

08/04/2016

Connection design - potentially disturbing electrical equipment rated less than or equal to 75A / phase subject to conditional connection.

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SD1E/3

19/01/2018

Technical Requirements for Customer Export Limiting Schemes.

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SD5E/1

14/08/2017

Design of Low Voltage Commercial and Industrial Connections.

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SD5E/1 + Calculation Spreadsheet

21/04/2017

SD5E/1 - Calculation Spreadsheet (hyperlinked to SD5E/1 - pages 13, 15 & 35).

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SD1H/1

17/05/2017

The Treatment of Losses in an Inclusive Network Design Process.

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WPD G81 Part 4

28/04/2016

Framework for Design and Planning of Industrial and Commercial Underground Connected Loads up to and including 11kV.
 

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SD4/7

15/07/2015

11kV and 6.6kV System Design.
 

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SD4O/1

14/10/2015

Standard HV Connection Arrangements.

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TP4B/2

23/01/2014

11kV and 6.6kV Transformer Protection.

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WPD G81 Part 1

12/12/2012

Housing Development Design framework.

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NC2D/2

05/03/2014

Specification of Connection Assets.

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CA2A/2

08/06/2016

Jointing Configurations for 11kV Cables.

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CA2C/9

19/01/2018

General Requirements for 11kV Cable Jointing.
 

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CA2M/4

08/06/2016

Procedures for Making 11kV Cable Branch Joints.
 

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CA2N/6

19/01/2018

Procedures for Making 11kV Cable Stop Ends.

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CA2O/4

08/06/2016

Procedures for Making 11kV Cable Loop Joints.

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CA2S/3

08/06/2016

E 5 Numbers for 11kV Cable Jointing Materials.

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CA2T/4

08/06/2016

Tools Required for 11kV Cable Jointing.

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CA2U/4

08/06/2016

Procedures for Making 11kV Cable EPR Terminations.

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CA2V/4

23/01/2018

Procedures for Making 11kV Cable Straight Joints.

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CA2W

08/06/2016

Procedure for Making an 11kV Trefoil Bond Joint.
 

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TP18A

27/01/2016

Application of Generator Constraint Panels.

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TP21D/2

21/10/2015

11kV, 6.6kV and LV Earthing.
 

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TP21A/2

02/05/2014

Safety Limits for Touch and Step Voltages - Earthing System Design/Assessment.
 

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TP21K/1

08/07/2014

Substation Compound Fence Earthing.

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EE82/1

08/03/2015

Specification for Single Core Wet Design of 11kV Medium Voltage EPR Insulated Cables.

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EE132

28/08/2015

Earthing Materials and Associated Sundry Items.

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SD1C

17/09/2015

Selection and Application of WPD Assessed Switchgear for Use on the Distribution Network.

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SD1F/2

03/06/2016

Competition in Connections Code of Practice (COP) - Procedure for network analysis by Independent Connection Providers (ICPs).
 

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SD1F/2 + Audit Form

03/06/2016

SD1F/2 - Point of Connection & Contestable Design Audit Form (hyperlinked to SD1F/2 - page 10).

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SD4T

30/10/2017

The use of Simplified Load Flow Techniques for 11kV Network Design.

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TP21B/1

07/04/2016

Design and Installation of Fixed Earthing Systems - Major Substations.

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SD1G/1

22/04/2016

Communications Requirements for Parallel Generation Sites.

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SD4A/2

06/07/2016

Design of Western Power Distribution's 11kV and 6.6kV Networks.

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SD1E/2

03/03/2017

Technical Requirements for Customer Export Limiting Schemes.

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SD1H/1

17/05/2017

The Treatment of Losses in an Inclusive Network Design Process.

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EE136

03/07/2017

Ancillary Electrical Equipment for Use in Conjunction with Switchgear and Protection/Control Panels.

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EE185/1

22/05/2018

12kV Primary Type Indoor Circuit Breakers.

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SD7F/2

02/08/2017

Determination of Short Circuit Duty for Switchgear on the WPD Distribution System.

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EE89/2

08/01/2013

Fixed Earthing Systems for Major Substations.

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SD3/7

05/11/2014

66kV and 33kV System Design.

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NC2D/2

05/03/2014

Specification of Connection Assets.
 

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TP21A/2

02/05/2014

Safety Limits for Touch and Step Voltages - Earthing System Design/Assessment.

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TP21K/1

08/07/2014

Substation Compound Fence Earthing.
 

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CA3A

19/04/2017

Jointing Configurations for 33kV Cables.
 

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CA3C/3

19/04/2017

General Requirements for 33kV Cable Jointing.
 

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CA3L/2

05/11/2014

Procedures for Making 33kV Single Core Cable EPR Branch Joints.
 

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CA3M/4

05/11/2014

Procedures for Making 33kV Cable Straight Joints

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CA3N/2

05/11/2014

Procedures for Making 33kV Single Core Cable Stop End Joints.

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CA3P/2

05/11/2014

Procedures for Making a 33kV Trefoil Bond Joint.

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CA3V/3

05/11/2014

Procedures for Making 33kV Cable Terminations.

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CA3X

19/04/2017

E 5 Numbers for 33kV Cable Jointing Materials.
 

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CA3Y

19/04/2017

Tools Required for 33kV Cable Jointing.
 

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SD3A/2

04/12/2015

Low Voltage AC Supplies at 33kV and 66kV Substations.

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EE132

28/08/2015

Earthing Materials and Associated Sundry Items.
 

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SD1C

17/09/2015

Selection and Application of WPD Assessed Switchgear for Use on the Distribution Network.
 

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SD1F/2

03/06/2016

Competition in Connections Code of Practice (COP) - Procedure for network analysis by Independent Connection Providers (ICPs).

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SD1F/2 + Audit Form

03/06/2016

SD1F/2 - Point of Connection & Contestable Design Audit Form (hyperlinked to SD1F/2 - page 10).

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TP18A

01/02/2016

Application of Generator Constraint Panels.
 

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TP21B/1

07/04/2016

Design and Installation of Fixed Earthing Systems - Major Substations.

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SD1G/1

22/04/2016

Communications Requirements for Parallel Generation Sites.

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SD1E/3

19/01/2018

Technical Requirements for Customer Export Limiting Schemes.

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SD1H/1

17/05/2017

The Treatment of Losses in an Inclusive Network Design Process.

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EE136

03/07/2017

Ancillary Electrical Equipment for Use in Conjunction with Switchgear and Protection/Control Panels.

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EE182

03/07/2017

36kV Indoor Primary Circuit Breakers.
 

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SD7F/2

02/08/2017

Determination of Short Circuit Duty for Switchgear on the WPD Distribution System.

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TP21S/1

12/09/2017

Application of Surge Arresters to Grid Transformers.

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TP21S/1 + Calculator Spreadsheet

12/09/2017

TP21S/1 - Calculation Spreadsheet (hyperlinked to TP21S/1 - pages 3 & 6).

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EE89/2

08/01/2013

Fixed Earthing Systems for Major Substations.

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SD3/7

05/11/2014

66kV and 33kV System Design.
 

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NC2D/2

05/03/2014

Specification of Connection Assets.

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TP21A/2

02/05/2014

Safety Limits for Touch and Step Voltages - Earthing System Design/Assessment.
 

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TP21K/1

08/07/2014

Substation Compound Fence Earthing.
 

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SD3A/2

04/12/2015

Low Voltage AC Supplies at 33kV and 66kV Substations.

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EE132

28/08/2015

Earthing Materials and Associated Sundry Items.
 

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SD1C

17/09/2015

Selection and Application of WPD Assessed Switchgear for Use on the Distribution Network.

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SD1F/2

03/06/2016

Competition in Connections Code of Practice (COP) - Procedure for network analysis by Independent Connection Providers (ICPs).

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SD1F/2 + Audit Form

03/06/2016

SD1F/2 - Point of Connection & Contestable Design Audit Form (hyperlinked to SD1F/2 - page 10).

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TP21B/1

07/04/2016

Design and Installation of Fixed Earthing Systems - Major Substations.

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SD1G/1

22/04/2016

Communications Requirements for Parallel Generation Sites.
 

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SD1E/3

19/01/2018

Technical Requirements for Customer Export Limiting Schemes.

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SD1H/1

17/05/2017

The Treatment of Losses in an Inclusive Network Design Process.

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SD7F/2

02/08/2017

Determination of Short Circuit Duty for Switchgear on the WPD Distribution System.

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TP21S/1

12/09/2017

Application of Surge Arresters to Grid Transformers.

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TP21S/1 + Calculator Spreadsheet

12/09/2017

TP21S/1 - Calculation Spreadsheet (hyperlinked to TP21S/1 - pages 3 & 6).

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EE89/2

08/01/2013

Fixed Earthing Systems for Major Substations.
 

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SD2/6

06/01/2015

132kV System Design.
 

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NC2D/2

05/03/2014

Specification of Connection Assets.

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TP21A/2

02/05/2014

Safety Limits for Touch and Step Voltages - Earthing System Design/Assessment.
 

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TP21K/1

08/07/2014

Substation Compound Fence Earthing.
 

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EE132

28/08/2015

Earthing Materials and Associated Sundry Items.
 

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SD1C

17/09/2015

Selection and Application of WPD Assessed Switchgear for Use on the Distribution Network.

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SD1F/2

03/06/2017

Competition in Connections Code of Practice (COP) - Procedure for network analysis by Independent Connection Providers (ICPs).

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SD1F/2 + Audit Form

03/06/2016

SD1F/2 - Point of Connection & Contestable Design Audit Form (hyperlinked to SD1F/2 - page 10).

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TP21B/1

07/04/2016

Design and Installation of Fixed Earthing Systems - Major Substations.

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SD1G/1

22/04/2016

Communications Requirements for Parallel Generation Sites.
 

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SD1E/3

19/01/2018

Technical Requirements for Customer Export Limiting Schemes.

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SD1H/1

17/05/2017

The Treatment of Losses in an Inclusive Network Design Process.
 

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SD7F/2

02/08/2017

Determination of Short Circuit Duty for Switchgear on the WPD Distribution System.
 

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TP21S/1

12/09/2017

Application of Surge Arresters to Grid Transformers.

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TP21S/1 + Calculator Spreadsheet

12/09/2017

TP21S/1 - Calculation Spreadsheet (hyperlinked to TP21S/1 - pages 3 & 6).

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SD5F

30/10/2017

Connecting Multiple Small Low Voltage Connections with Limited Network Analysis.
 

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SD5F

30/10/2017

Connecting Multiple Small Low Voltage Connections with Limited Network Analysis.
 

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SD5F

30/10/2017

Connecting Multiple Small Low Voltage Connections with Limited Network Analysis.
 

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SD4D

03/04/2018

The use of Simplified Load Flow Techniques for 11kV Network Design.

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SD6F/1

19/01/2018

Dealing with Potentially Disturbing Electrical Loads/Equipment.

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SD6F/1

19/01/2018

Dealing with Potentially Disturbing Electrical Loads/Equipment.

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SD6F/1

19/01/2018

Dealing with Potentially Disturbing Electrical Loads/Equipment.

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SD4E

14/05/2018

High Voltage Connections with Minimal Network Analysis

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NC7C

11/06/2018

Installation and Record Requirements for LV Housing Developments.

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