In the US, if everything else is wired correctly but you disconnect the neutral-ground bond, you may end up with rather high ground impedance. Those two ground

In the US, if everything else is wired correctly but you disconnect the neutral-ground bond, you may end up with rather high ground impedance. Those two ground rods, 6 feet apart, that satisfy code could easily have quite a few ohms in dry weather. This, in turn, could allow a live (120V to ground) wire to short to an equipment ground, drawing only a few amps and making every grounded object in your house quite dangerous indefinitely. Since the NEC does not require any form of residual current detection except for some branch circuits unless you have a huge service, nothing really protects against this type of failure.