On 15/02/2013 16:14, John Rumm wrote:
On 15/02/2013 15:16, Stephen H wrote:
Hi,

I am putting in a new 32A ring main that will just be for garage
internal sockets and external outside sockets. This is on a RCBO.

Reason for this if anything happens outside, it does not affect anything
else internally in the house.

I am using IP67 rated kit for all the sockets that are outside.

The garage is integral to the house, has no windows, has a upvc door and
an up and over garage door.

I am using 20mm conduit to mechanically protect the cables from
accidental damage throughout

Now do the socket face plates and pattresses that are INSIDE the garage
have to be IP rated as well or is white domestic faceplates and
pattresses inside a garage acceptable for meeting 17th Ed wiring regs?


The only requirement in the circumstance is that they are appropriate
for the situation. So assuming it does not routinly get rain blowing in
there then normal domestic ones will be fine.

I have tried to take a common sense approach. So far:

I have mounted the sockets at least 0.5m away from a door/opening as a
mitigation against blown in rain when opening/closing doors.

I have used 20mm round conduit to protect the cable drops from the
ceiling to the wall mounted sockets as I believe the wall cable drops
are more likely to sustain damage than the ceiling level ring main.

The ring main has been clipped to the wall at approx 2.8 metres above
ground level so above clumsy tall people.

As mentioned earlier, the garage sockets and outside sockets are on
their own ring main with its own 32A RCBO.

In addition, the garage lighting and outside lighting is on its own 6A RCBO.

Depending on what you plan to do in there you might want to consider
metal clad (and the surface pattresses will have knockout holes ready to
take a conduit terminator) since they are physically more robust.

(flush mounted plastic sockets are also quite damage resistant!)

The pattresses are PVC which are not as brittle as moulded ones so I
believe that will be better when impact occurs.

Getting the 20mm knockouts out of the PVC pattresses seems to be an
art.... I broke two today trying to get the knockouts out. You can't
realy use a hole saw as there is pilot hole in the plastic disc to align
the drill bit with