12v fan in bathroom

[aaelectric]

i do but just didnt understand exactly, and if i new the answer i wudnt have asked wud i !!

 

[Richard Burns]

aaelectric
The information below is the table in the OSG that summarises the requirements, this is very basic information that is readily available.

The fixed permanently connected equipment, including ventilation equipment and luminaries, allows the items you are asking about in zones 1 and 2 (although the source of supply for SELV items must be outside zones).

Extract fans should have a means of local isolation for maintenance, although this can be the MCB for the circuit, and it is common practice to fit a fan switch, it is more likely that the manufacturers instructions will require an isolator switch and Manufacturers instructions take precedence.

Table 8.1 701.32 701.5	Requirements for equipment (current-using and accessories) in a location containing a bath or shower
Zone	Minimum degree of protection	Current using equipment	Switchgear and accessories
0	IPX7	Only 12 V a.c. rms or 30 V ripple-free d.c. SELV, the safety source installed outside the zones.	None allowed
1	IPX4 (IPX5 if water jets)	25 V a.c. rms or 60 V ripple-free d.c. SELV or PELV, the safety source installed outside the zones. The following mains voltage fixed, permanently connected equipment allowed: whirlpool units, electric showers, shower pumps, ventilation equipment, towel rails, water heaters, luminaires	Only 12 V a.c. rms or 30 V ripple-free d.c. SELV switches, the safety source installed outside the zones.
2 601-08-01 601-09-03	IPX4 (IPX5 if water jets)	Fixed permanently connected equipment allowed. General rules apply.	Only switches and sockets of SELV circuits allowed, the source being outside the zones, and shaver supply units complying with BS EN 61558-2-5 if fixed where direct spray is unlikely
Outside zones 601-08-01	No requirement	General rules apply.	Accessories allowed and SELV socket-outlets and shaver supply units to BS EN 61558-2-5 allowed. Socket-outlets allowed 3 m horizontally from the boundary of zone 1

 

[aaelectric]

cheers richard!!!!