How to verify a switchboard design
To comply with AS/NZS 61439, all switchboards and panelboards require documentation to prove their performance characteristics meet or exceed the requirements for the installation as specified. This documentation comes in two parts:
- Design Verification - compiled by the assembly manufacturer proving their design is the same or better than the verification documentation from original manufacturer. If the assembly manufacturer makes their own design, they become the original manufacturer.
- Routine Verification - checks completed by the assembly manufacturer on the assembled switchboard.
AS/NZS 61439-1 Table D1 gives a table of characteristics to be verified and nominates which of the 3 methods below are available to use for each characteristic.
VERIFICATION BY TEST
- The switchboard or relevant section of the switchboard is designed and assembled the same as the tested assembly.
VERIFICATION BY COMPARISON
- The switchboard or relevant section of the switchboard is designed and assembled in a way that differs from the test, but the characteristics of the deviation satisfies the conditions within the standard.
VERIFICATION BY ASSESSMENT
- This includes the correct application of design rules and calculations, including use of appropriate safety margins.