Bathroom extraction fan.

[Gtfast]

Hi all
I have had a look at some previous comments on this topic but it is still not clear to me.

1. Can a bathroom extraction fan be connected from the bathroom light live and neutral to the extraction fan isolator or plug to the extraction fan.

2.Can the extraction fan isolator or plug be in the ceiling not in the bathroom.

3.Can the extraction fan be installed in the ceiling above the shower cubicle.Where can it be positioned.

Thanks

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[GCE]

Hi

Clause 6.16.4.3 allows you to use an isolator or 5 amp socket from a light circuit and as long as the fan is outside of Zone 3 it is allowed



6.16.4.3 Extraction fans
Where an extraction fan supply is switched with a luminaire, it shall be
connected to the switched portion of the light circuit, provided that the fan
circuit is connected by means of a SANS 164-3 or SANS 164-2-1 or
SANS 164-2-2 socket-outlet or a switch disconnector.

7.1.1.3 Electrical equipment, including appliances (although appliances are
not covered by this part of SANS 10142), shall not be installed in a bathroom
except under the conditions given in table 7.1. No electrical equipment shall
be installed in zone 0 except in accordance with 7.1.3.2. (see also 7.1.4.4).

7.1.2.4 Zone 3
Zone 3 is limited by
a) the vertical plane external to zone 2 and the parallel vertical plane 2,40 m
external to zone 2, and
b) the floor and the horizontal plane 2,25 m above the floor.

[Gtfast]

Thanks
If zone 1s vertical height is 2,5m. Does that mean anything higher is outside of the zones so I could mount the extractor fan in this area on the ceiling.

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[Gtfast]

Thanks
If zone 1s vertical height is 2,5m. Does that mean anything higher is outside of the zones so I could mount the extractor fan in this area on the ceiling.

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Or just use IPX5 extractor fan.

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[GCE]

Thanks
If zone 1s vertical height is 2,5m. Does that mean anything higher is outside of the zones so I could mount the extractor fan in this area on the ceiling.

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You should be safe to do so

[Gtfast]

Hi all
Looking at the regs again.
Concerning installing ceiling extractor fan in shower area..
Table 7.1 indicates fixed appliances in Zone 2 should be installed as per A and B1 or B2.
It makes no mention of Degrees of protection.
Reg 7.1.4.1 indicates in Zone 2 the equipment should have protection of IPX4.
In Zone 2 do we have to apply table 7.1 and reg 7.1.4.1.
The extractor fan must be IPX4 rated and be connected as per A and B1 or B2.
Some input would be appreciated.
Thanks

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[GCE]

Hi all
Looking at the regs again.
Concerning installing ceiling extractor fan in shower area..
Table 7.1 indicates fixed appliances in Zone 2 should be installed as per A and B1 or B2.
It makes no mention of Degrees of protection.
Reg 7.1.4.1 indicates in Zone 2 the equipment should have protection of IPX4.
In Zone 2 do we have to apply table 7.1 and reg 7.1.4.1.
The extractor fan must be IPX4 rated and be connected as per A and B1 or B2.
Some input would be appreciated.
Thanks

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The zone is determined by the dimensions around a bath or shower - Do not get confuse with the actual room the shower happens to be in.

read the zoning dimensions in conjunction with Fig 7.1.3



7.1.2.3 Zone 2
Zone 2 is limited by
a) the volume external to zone 1 and the parallel vertical plane 0,60 m
external to zone 1, and
b) the floor and the horizontal plane 2,25 m above the flo

[Gtfast]

Thanks maby were missing one another.

I have noticed something in the field.

Refering to table 7.1 and reg 7.1.4.1

In zone 2 would one place an extractor fan that has
IPX4 protection be on earth leakage and not able to touch with standard test finger.
Or
IPX4 protection and be a class 2 appliance

Is the IPX4 necessary which is not on table 7.1.

It seems that they are saying you can connect as per table 7.1 only ,but then there is reg 7.1.4.1.

Table 7.1 — Conditions under which electrical equipment may be
installed in a bathroom

7.1.4 Selection and erection of electrical equipment
7.1.4.1 Degrees of protection
Electrical equipment shall have at least the following degrees of
protection against ingress of water:
in zone 0: IPX7;
b) in zone 1: IPX5;
c) in zone 2: IPX4;
d) in zone 3: IP21; and
e) outside zone 3 in the same room: IP21, except for a distribution board
Thanks


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[GCE]

Written clause takes preference - Most illustrations are informative