kiwi,
Darned good point mate.
Let's see what we have here.
A Hospital would have a Double Redundancy system to ensure that there is no break of supply under any circumstances, not even for a nano-second.
Medical systems are the cream of Electrical system.
As in the Tech's that work on them are trained for that work.
Kieran,
if you want the email of the local Hospital Tech, who is also an Electrician, e-mail me at the above address.
He would be the guy to talk to.
Hope this helps.