Switchboard upgrade recommendations

The technical team frequently receives inquiries about the extent to which a switchboard upgrade should be carried out.

When conducting a domestic switchboard upgrade, we would recommend as a minimum the following:

• All final sub circuits in domestic are RCD protected. 
• Commercial switchboards Light and Power up to and including 32a circuits RCD protected.
• Not more than three circuit breakers on one RCD (domestic).
• Conduct an insulation resistance test A-E & N-E on all final subcircuits before reconnection.
• Check the MEN and if metal enclosure check the box bond size and serviceability.
• Check main earth ( <0.5Ω ) size as per AS/NZS 3000 table 5.1. 
• Main Earth conductor and earth stake serviceability, exposed to the weather and accessible, connection painted & tagged.
• Check for any equipotential bonding.
• Ensure there is a cable route diagram ( if known ) location of main earth and circuit labeling.
• General visual inspection of the switchboard.

For any questions contact the technical team on 08 6241 6100