Greetings All

As for a geyser in the refs it is specifically stated that it shall be bonded.

6.13.2.2 (general)

The parts given in 6.13.2.2 to 6.13.2.5 SHALL be bonded.

Geyser, antennas (although 16.13.2.3 says may be bonded) ,roofs, gutters and water pumps.

Therefore 16.12.3.2 would not apply to geysers.