running fan/light off 1mm
 

SWMBO has now decided we need a fan/light in the dining area of the
kitchen !! is it OK to still use the 1mm T&E I have or does it need to
go up to 1.5mm? unfortunatley I dont have the rating of the fan as I
havent got it yet!!

other lights off that lighing cct will be a twin 5ft flourescent and
two 300mm flourescent strips under the wall units.(I cant see the tubes
taking more than 100w total)

cheers once again

running fan/light off 1mm
 

Staffbull wrote:
SWMBO has now decided we need a fan/light in the dining area of the
kitchen !! is it OK to still use the 1mm T&E I have or does it need to
go up to 1.5mm? unfortunatley I dont have the rating of the fan as I
havent got it yet!!

other lights off that lighing cct will be a twin 5ft flourescent and
two 300mm flourescent strips under the wall units.(I cant see the tubes
taking more than 100w total)

cheers once again

1mm's fine.

NT

running fan/light off 1mm
 

wrote:

Staffbull wrote:
SWMBO has now decided we need a fan/light in the dining area of the
kitchen !! is it OK to still use the 1mm T&E I have or does it need to
go up to 1.5mm? unfortunatley I dont have the rating of the fan as I
havent got it yet!!

other lights off that lighing cct will be a twin 5ft flourescent and
two 300mm flourescent strips under the wall units.(I cant see the tubes
taking more than 100w total)

cheers once again

1mm's fine.

NT

No. Depends on the MCB/Fuse. If it is a 10amp then 1mm^2 is not fine.
1mm^2 should be protected by a 6 amp MCB.

running fan/light off 1mm
 

dcbwhaley wrote:
wrote:
Staffbull wrote:

SWMBO has now decided we need a fan/light in the dining area of the
kitchen !! is it OK to still use the 1mm T&E I have or does it need to
go up to 1.5mm? unfortunatley I dont have the rating of the fan as I
havent got it yet!!

other lights off that lighing cct will be a twin 5ft flourescent and
two 300mm flourescent strips under the wall units.(I cant see the tubes
taking more than 100w total)

cheers once again

1mm's fine.

No. Depends on the MCB/Fuse. If it is a 10amp then 1mm^2 is not fine.
1mm^2 should be protected by a 6 amp MCB.

Given the minimal amount of other loading on the circuit I would wonder
what was going on if I found a 10A lighting circuit there.


NT

running fan/light off 1mm
 

In article .com,
"dcbwhaley" writes:

No. Depends on the MCB/Fuse. If it is a 10amp then 1mm^2 is not fine.
1mm^2 should be protected by a 6 amp MCB.

It's not that simple. On a 10A MCB, a run of up to 22m of
cable is permitted in the OSG. (1mm^2 can be rated at up to 16A,
depending on circumstances.) In commercial premises where 10A
lighting circuits are more common, the length of cable runs
often exceeds those permitted for 1.0 and 1.5mm^2 cable, which is
why larger cables are often found on such 10A lighting circuits,
but such long lengths would be very unlikely to be an issue in
domestic wiring.

--
Andrew Gabriel

running fan/light off 1mm
 

Andrew Gabriel wrote:
In article .com,
"dcbwhaley" writes:

No. Depends on the MCB/Fuse. If it is a 10amp then 1mm^2 is not fine.
1mm^2 should be protected by a 6 amp MCB.

It's not that simple. On a 10A MCB, a run of up to 22m of
cable is permitted in the OSG. (1mm^2 can be rated at up to 16A,
depending on circumstances.) In commercial premises where 10A
lighting circuits are more common, the length of cable runs
often exceeds those permitted for 1.0 and 1.5mm^2 cable, which is
why larger cables are often found on such 10A lighting circuits,
but such long lengths would be very unlikely to be an issue in
domestic wiring.

--
Andrew Gabriel


Hi Andrew, the total cable length including switch cables will be
around 15m

running fan/light off 1mm
 

In article .com,
"Staffbull" writes:

Andrew Gabriel wrote:
In article .com,
"dcbwhaley" writes:

No. Depends on the MCB/Fuse. If it is a 10amp then 1mm^2 is not fine.
1mm^2 should be protected by a 6 amp MCB.

It's not that simple. On a 10A MCB, a run of up to 22m of
cable is permitted in the OSG. (1mm^2 can be rated at up to 16A,
depending on circumstances.) In commercial premises where 10A
lighting circuits are more common, the length of cable runs
often exceeds those permitted for 1.0 and 1.5mm^2 cable, which is
why larger cables are often found on such 10A lighting circuits,
but such long lengths would be very unlikely to be an issue in
domestic wiring.

Hi Andrew, the total cable length including switch cables will be
around 15m

To answer your original question, 1mm is fine.
Even if you had a 10A MCB on the lighting circuit
(which is unlikely in a home) 1mm would still be fine.

--
Andrew Gabriel