so this installation we have a special location which is a sauna so in this small
video presentation we're going to look at some of the requirements for the sauna itself in this case
our sauna cannot have the control gear on the outside of the sauna because it's a remote from
the building it's an outside sauna so the control gear in this case is within the actual dwelling
so to turn it on we activate the button inside the building and then go out to the sauna itself
so as we've just seen the control gear to turn on the sauna is actually in the main build itself
if this was a swimming pool complex it's likely to be on the outside of the building or in an
adjacent room in order to turn on the sauna itself it's a special locations reason being because of
high humidity lack of clothing and moisture that are in the environment itself so therefore more
susceptible to the effects of electric shock we do have a switch on the outside however to turn
on the lights which is ip66 so when we turn this one on we've actually got the lighting system in
the sauna on itself we've got very limited wiring systems in the sauna so let's see what we have
got within the sauna itself so inside the soil we can see there's very limited electrical equipment
and the sauna itself is broken down into three zones zone one zone two and zone three the only
equipment electrical equipment that is that's installed inside of zone one which is down here
is the sauna itself the sauna itself is also the only piece of equipment that doesn't necessarily
need to be rcd protected but now cd rated at 30 milliamps or less due to the fact that the
element itself is sometimes secondary insulated and there can be a moisture barrier between the
two causing an earth leakage so if they can't seal that element therefore the manufacturers would
suggest that it doesn't go on an rcd so you must check manufacturer's data to work out whether the
heating element within the sauna can have rcd protection zone one is the sauna itself
and comes out in around half a meter we're about to where i'm sitting here just here is about half
a meter out and we can see there is no associated lighting either in zone one so zone one comes out
from the sauna half a meter and all the way to the ceiling the only electrical equipment installed
in zone one is the sauna itself once we come out into the sauna we have zones two and zones three
zone two comes away from zone one and is a meter so i'm going to hear that's a meter up on the wall
itself all the way around excluding zone one is zone two when we go above a meter in the same
area coming up to the insulated ceiling that is zone three so we've got a sort of broken down
into three zones zone one which contains the sauna unit itself zones two which is a meter
up for the remaining area and zone three which is the remaining distance the insulated ceiling
all mains electrical equipment installed within the sauna must have a minimum ip range of ipx4
or if there is likely to have jets of water against it then a minimum ip rating of x5
this light fitting here if you unscrew it you can see that we've got a seal on the back and
i believe the minimum ip rating of x4 is more than achieved from this type of light fitting i
cannot see its ip rating but i believe it will be nearer ip66 or ip65 if the light fitting wasn't a
mains light fitting and was using sclv it can have a minimum ip rating of ipx2 it's unlikely to have
any other electrical equipment within the sauna and we certainly can't have socket outlets in here
preferably the wiring system itself as in this one is is installed outside of the sauna itself
so we can't see any of the wiring system it's all above the insulated ceiling itself the fitting or
any electrical equipment installed within the sauna must be able to withstand temperatures
up to 125 degrees c so this light fitting here as well has been appropriately ip rated
has to be temperature rated up to a minimum of 125 degrees c within the sauna itself this
time there is emergency isolation switch so again it's likely to be selected from the manufacturer
and has to be able to withstand the high humidity and high temperature so it needs a minimum ip
rating if it's mains of ipx4 and to be able to withstand temperatures up to 125 degrees c so
in summary then the sauna is a special location it's onerous due to the fact of high humidity
high temperature and the lack of clothing wall by the people inside it it's broken
into three zones zone one where the sauna unit is kept zone two and zone three the sauna unit
is the only item that doesn't require additional protection by an rcd rated at 30 milliamps or less
and needed to be checked with a manufacturer to see whether it can be rcd protected
mains equipment installed within the sauna needs to have a minimum
ip rating of ipx4 and additionally protected by an rcd rated at 30 milliamps or less
and be able to withstand a temperature of 125 degrees c i hope this video has been some help