Great to hear that you had a good time in NZ.
Yes our electrical systems are a bit different then in the USA.
Single pole switching because we use the MEN system here
( Multiple Earth Neutral )
Never heard of a fire alarm tamper detector in a motel MCB board as these devices are supposed to be separately wired from 240 Volts mains wiring.
A heat or smoke detector may be located nearby.
We still use the old English colours for fixed TPS house wiring.
Red (Phase) Black (Neutral) and Green or Yellow Green (Earth).
For flex leads we use Brown (Phase) LightBlue (Neutral) GreenYellow (Earth)

The product of rotation, excitation and flux produces electricty.