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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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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 |
#2
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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 |
#3
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running fan/light off 1mm
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#4
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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 |
#5
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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 |
#6
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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 |
#7
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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 |
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