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422.3.1 Except for equipment for which an appropriate product standard specifies requirements, a luminaire shall be kept at an adequate distance from Combustible materials. Unless otherwise recommended by the manufacturer, a small spotlight or projector shall be installed at the following minimum distance from combustible materials:
(i) Rating up to 100 W 0.5 m
There is no reference to "top clearance" it is 0.5m all around.
There is a big difference between complying with regulations and being safe or sensible. The regulation above does no talk about ventilation and clearly a lamp used in a projector with fan running will not transmit the heat in the same way as one in still air. Which is why manufacturers are allowed to recommend being used closer then the 0.5 m.
Outside under the eves made of wood at half that distance unlikely a 50W halogen will cause a problem and with a 3W LED extremely unlikely but the regulation still says 0.5 m.
Part B 7.4 does not give much information and is vague as to requirements as is the similar document on Part P. So if it goes wrong easy to say one is in breach of Part whatever but before it goes wrong hard to prove it does not comply. We are hardly going to light a fire and time how long it takes to reach the next floor. If 11th of the 7th is anything to go by not long.
To become a scheme member costs a lot more than £500 per year. You have to have all the books to start with no good saying you read one in the library and first few job you need to pay the LABC as well. I no longer do domestic as all too easy for even a non reportable job to escalate which puts £200 on the customers bill. So the people I would have done work for in the main now DIY.
(i) Rating up to 100 W 0.5 m
There is no reference to "top clearance" it is 0.5m all around.
There is a big difference between complying with regulations and being safe or sensible. The regulation above does no talk about ventilation and clearly a lamp used in a projector with fan running will not transmit the heat in the same way as one in still air. Which is why manufacturers are allowed to recommend being used closer then the 0.5 m.
Outside under the eves made of wood at half that distance unlikely a 50W halogen will cause a problem and with a 3W LED extremely unlikely but the regulation still says 0.5 m.
Part B 7.4 does not give much information and is vague as to requirements as is the similar document on Part P. So if it goes wrong easy to say one is in breach of Part whatever but before it goes wrong hard to prove it does not comply. We are hardly going to light a fire and time how long it takes to reach the next floor. If 11th of the 7th is anything to go by not long.
To become a scheme member costs a lot more than £500 per year. You have to have all the books to start with no good saying you read one in the library and first few job you need to pay the LABC as well. I no longer do domestic as all too easy for even a non reportable job to escalate which puts £200 on the customers bill. So the people I would have done work for in the main now DIY.
