[tlb]

There isn't 240V to ground, which is the usual path for shocks. To get 240V through your body, you'd need to touch two hot wires at the same time. And you feel it when you touch the first one, so I think this is rare. You should be working with one hand most of the time.

The 200A is a danger. A direct short from a bus bar to ground can peak at 1000s of amps before the main breaker blows.

[quesera]

True, and of course it only takes a small fraction of one amp to cause harm to a human, if the path of the current crosses your heart or lungs.

240V at 200A would burn you crispy, but it's a bit challenging to get to.

120V at a fraction of 1A can disrupt/stop your heart, and it's easy to get inside a service panel.