29.06.2011
The Register of Electrical Contractors of Ireland (www.reci.ie) has published a Fourth Edition Rules clarification about the correct installation of recessed downlighters to avoid fire risk:
Rule 715 of
ET101 : 2008 Fourth Edition of the National Rules for Electrical
Installations wiring rules states: 'Equipment shall be installed in accordance
with the manufacturer's instructions, with particular regard to those relating
to flammable and non-flammable surfaces'.
Because of the extensive use of recessed
lighting in buildings, RECI inspectors sometimes encounter situations where
insulation material has not been cleared away around the light fittings giving
rise to a danger of overheating and fire damage. With increased public awareness
re Home Energy Saving scheme being operated by the Sustainable Energy Authority
of Ireland, we want to highlight this problem again and remind contractors to
take particular care when installing recessed light fittings.
The installer
must ensure that excessive heat build-up is avoided by keeping clear of thermal
insulation and having sufficient space around the luminaire. The importance of
clearing away the insulation cannot be over emphasised.
In many installations,
particularly retrofits of older premises, it can be very difficult to clear away
insulating material. However, as a professional installer the electrical contractor
is responsible for ensuring that a safe and satisfactory job is carried out. Time
saved initially may well prove costly in subsequent rectification costs.
In
summary:
- Always clear away thermal insulation around and above
light fitting.
- Ensure that the transformer is positioned at least 25cm
from the fitting and free of thermal insulation.
Extra low voltage
lighting provides attractive, effective, economic and reliable lighting solutions
where correctly installed. Ensuring that best practice is observed in installation
work will guarantee safety and satisfaction for the user and safeguard the reputation
of the installer.
The Home Energy Saving scheme Code of Practice has information
in relation to the installation of ceiling insulation and the requirements for
electrical cables and recessed light fittings. This document can be found on their
website by clicking here.
The reference is page 25 and the relevant excerpt
is noted below:
h. It is essential that any heavy-duty cables (e.g.
for cookers and showers) are not covered by the insulation material and should
instead be left on top of the new insulation, provided there is sufficient slack
to do so. Where this is not possible, a gap of at least 75mm should be left either
side of the (heavy duty) cables for their entire length within the attic area.
i.
The insulation material shall be retained at a minimum of 75mm from all electrical
apparatus penetrating the ceiling, for example recessed lighting fittings. Where
necessary a permanent physical restraint shall be used.
j. Recessed
downlights should be protected in such a way that the insulation does not cover
them and that they are adequately ventilated. It is recommended that a purpose
made recessed lighting housing is used. The contractor must advise the customer
of the need to keep the recessed lights clear of insulation.
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Related contacts
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Register of Electrical Contractors of Ireland (RECI)
Unit 9, KCR Industrial Estate,
Ravensdale Park, Kimmage,
Dublin 12, Ireland
Tel: 353 (0)1 492 9966
Fax: 353 (0)1 492 9983
Web: www.reci.ie |
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Source: RECI & James Hunt |
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