Switchboard design / Clive Wilson

Switchboard design.
Ready for manufacture.

Switchboard design and manufacturing documentation for industrial, commercial and infrastructure projects across New Zealand. We develop coordinated layouts, schematics and equipment schedules from your supply arrangement, loads and operating requirements, with the design deliverables agreed at quotation.

EPLAN Electric P8 and Pro Panel · Schematics and 3D layouts
Switchboard design and drawing preparation at CWS
Define the assembly

Layouts, schematics and equipment schedules

A clear design package connects the electrical specification with the physical assembly. Our work includes general arrangements, busbar layouts, power schematics and equipment schedules, with the scope agreed for each project.

Space for cable termination, access to devices, transport sections and future additions needs to be considered alongside electrical ratings. Identifying these requirements early reduces ambiguity when the board reaches manufacture.

CWS switchboard manufacture informed by design documentation
EPLAN Pro Panel

Coordinate the physical and electrical design

We use EPLAN Electric P8 for power and control schematics and EPLAN Pro Panel for 3D panel layouts. Component positions, cable space and clearances are reviewed with the electrical documentation before manufacture.

Heat dissipation, airflow and enclosure constraints also affect layout decisions. Required drawing formats, including PDF and agreed DWG or DXF deliverables, should be established at the start of the project.

Control revisions through manufacture

Approval comments and changes need a clear revision history. Agree who approves the design, the point at which manufacturing can proceed and how later changes will be incorporated into the final documentation.

Read how EPLAN supports coordinated switchboard design and documentation.

Electrical system information

Electrical analysis starts with the network.

PowerCAD network analysis can support load flow, short-circuit, voltage-drop and protection-coordination work within an agreed design scope. Useful results depend on reliable source, transformer, cable, load and protection data.

Confirm the designer’s responsibilities, study boundaries and required outputs. Supply authority information, protection settings and operational switching arrangements should be coordinated with the responsible project parties.

Start the design with
RequirementWhat to include
Electrical briefSingle-line diagram, load schedule, supply details and prospective fault information.
Physical constraintsRoom layout, access, cable entry, environment and transport limitations.
OperationControl philosophy, interlocking, metering and communications interfaces.
DeliverablesDrawing formats, equipment schedules, approval process and revision requirements.
VerificationApplicable specification, verification records and factory-test or witness requirements.
Start a conversation

Bring the design brief to CWS

Send the single-line diagram, project specification and available site information. We will review the design and manufacturing scope with you. See our main switchboards and motor control centres.

Printable quote checklist (PDF)Email your checklist, drawings and schedules to estimating@clivewilson.co.nz. Leave unknown items blank.

Protection and monitoring

Specify the technology your board needs.

Explore arc-flash protection, temperature monitoring, fire-system integration and connected metering options.

Explore switchboard technology
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