bengasman said:
Admittedly I like bonding the stainless steel sink to hot and cold
What risk do you think you're mitigating by doing that?
The same sort of risk that necessitates the bonding of a bath with the difference that I don’t tend to submerse myself in the sink but the likelihood of electrical appliances being used in the kitchen a bit higher than in the bathroom.
Methinks it is quite possible for a double insulated blender to be knocked into a sink full of water. The rcd would probably react a bit quicker than a 20 or 30 amp mcb.
If I really sat down, I could probably dream up half a dozen more situations that would benefit from 0.03 ohm resistance to earth.