* Based on the Master Electricians Australia report referenced by the Australian Government Treasury, ~40% of homes were reported to lack safety switches. Not having a safety switch means no dedicated electric-shock protection on those circuits.
Source: Master Electricians Australia report, Treasury document
** Figure calculated using appliance estimates published by Drax, comparing ~21 appliances per household in the 1970s to ~50 today, equating to an approximate 138% increase.
Source: Drax, "How has electricity use changed since the 1970s?"
^ $3,299 is for a 12-circuit panel, in NZD and includes GST. Pricing differs for 16-circuit and 20-circuit panels.