- May 25, 2011
- 6,161
- 7,152
- 10,256,798
- If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
- United Kingdom
- What type of forum member are you?
- Practising Electrician (Qualified - Domestic or Commercial etc)
Hi all,
been a while - hello!
A question for the collective brain - I'm about to do a series of inspections on an ANIMAL hospital. This in itself has always vexed me as to how to apply the special location medical rules as 1) a critical life-threatening operation is the same whether it's human or animal, 2) animals are generally accepted as having a lower shock threshold than humans and 3) the staff still need to be safe surrounded by all manner of O2, medical gasses, gowns..... etc.
But - specifically, the 'essential' circuits are (theoretically) backed up by a standby generator (the reason I say theoretically is because I don't think it's been run up for at least 8yrs....). Obviously, a circuit operating on public supply you'd expect to have the usual Zs limits as listed in 710 but when switched to a genny then ADS goes out the window - a 4 or 5kw petrol generator just doesn't have the current available, nor in anything like the time.
I know that in an 'ideal' situation, each cct would have an A type 10mA RCBO but that's 1) not realistic and 2) would just lead to all sorts of nuisance tripping issues.
Any thoughts other than to stop over-thinking a problem?
R.
been a while - hello!
A question for the collective brain - I'm about to do a series of inspections on an ANIMAL hospital. This in itself has always vexed me as to how to apply the special location medical rules as 1) a critical life-threatening operation is the same whether it's human or animal, 2) animals are generally accepted as having a lower shock threshold than humans and 3) the staff still need to be safe surrounded by all manner of O2, medical gasses, gowns..... etc.
But - specifically, the 'essential' circuits are (theoretically) backed up by a standby generator (the reason I say theoretically is because I don't think it's been run up for at least 8yrs....). Obviously, a circuit operating on public supply you'd expect to have the usual Zs limits as listed in 710 but when switched to a genny then ADS goes out the window - a 4 or 5kw petrol generator just doesn't have the current available, nor in anything like the time.
I know that in an 'ideal' situation, each cct would have an A type 10mA RCBO but that's 1) not realistic and 2) would just lead to all sorts of nuisance tripping issues.
Any thoughts other than to stop over-thinking a problem?
R.
