Energy Efficent Lighting

Spikenaylor · Jan 28, 2012

Part L1, Dwellings:
Internal lighting
Section 1.54 of the Approved Document to L1 requires that reasonable provision be made for the installation of energy efficient lighting, preferably in those areas where the lighting is expected to have most use. To achieve this, there are two recommendations.

1. At least 25% of the installed light fixtures should use a light bulb which has a luminous efficacy greater than 40 lumens per circuit-watt.
2. These light fixtures should also have a lamp holder which prohibits the use of light bulbs which are less efficient.

I am doing a full rewire of a domestic house and cannot find any decent light fittings that fall into this category, only a basic pendant set which requires 40mm lamp shades which the customer thinks look ugly, none to her taste etc.

How do you guys go about this dilema.

Spikenaylor

malcolmsanford · Jan 28, 2012

Isn't it still just required for "new builds" and "extensions" or does it now include rewires?

Richard Burns · Jan 28, 2012

You are now well out of date the recommendation now is from the domestic building services compliance guide 2010, you no longer need specific fittings, but must have 75% >45lm/W.
Makes things much easier.

[ElectriciansForums.net] Energy Efficent Lighting

Spikenaylor · Jan 28, 2012

From the building regs on the planning portal

Building Regulations

If you are carrying out electrical work and fixing lighting to the outside of
your house in England and Wales, you will have to follow new building
regulations rules.

You should either use an installer who is registered with the competent
person scheme or make an application to your local authority's building control
department or approved inspectors.

It is now a general aim to make our buildings as energy efficient as
possible. You are required to install efficient electric lighting to your house
in specific circumstances including:

When your dwelling has been extended
When your existing lighting system is being replaced as part of re-wiring
works.

An example of efficient lighting is where reasonable provision should be made
to enable effective control and/or use of efficient lamps such that:

Either, lamp capacity does not exceed 150 Watts per light fitting and the
lighting automatically switches off when there is enough daylight and when it is
not required at night;
or the lighting fittings have sockets that can only be used with lamps
having an efficacy greater than 40 lumens per circuit-Watt.

oldtimer · Jan 28, 2012

Also when fitting energy saving lamps alway fit the next size up why you ask well 60 watt incandescent is equal to 11 watt but the general public always say that they are too dull this is because 11 watts in my view gives 50 watts output so fit a 14 watt ie = to 75 watts but more like in my view 65 watt works all the time for me

i=p/u · Jan 28, 2012

i have one comming up aswell, and the dude in edmundsons said the only ones thattick both boxes are the ones at £35 a fitting, think part L and M

Spikenaylor · Jan 28, 2012

so according to the domestic building services compliance guide 2010 I can use standard light fittings with bulbs like this?

lumen 1510
wattage 25W

lumens/circuit watt = 60.1

is my theory correct. or can anyone correct me.

Our Part Number	2204
Cap Description	27mm Edison Screw (E27)
Wattage	25W
Voltage	240V
Finish	864 - daylight
Length	151mm
Diameter	60mm
Energy Rating Category	A
Colour Temp	6400K
Rated Life	8000hrs
Equivalent To	75W
Lumen Output	1510
Dimmable?	No

Richard Burns · Jan 28, 2012

Spikenaylor said:
From the building regs on the planning portal

Building Regulations

If you are carrying out electrical work and fixing lighting to the outside of
your house in England and Wales, you will have to follow new building
regulations rules.

You should either use an installer who is registered with the competent
person scheme or make an application to your local authority's building control
department or approved inspectors.

It is now a general aim to make our buildings as energy efficient as
possible. You are required to install efficient electric lighting to your house
in specific circumstances including:

When your dwelling has been extended

When your existing lighting system is being replaced as part of re-wiring
works.

An example of efficient lighting is where reasonable provision should be made
to enable effective control and/or use of efficient lamps such that:

Either, lamp capacity does not exceed 150 Watts per light fitting and the
lighting automatically switches off when there is enough daylight and when it is
not required at night;

or the lighting fittings have sockets that can only be used with lamps
having an efficacy greater than 40 lumens per circuit-Watt.

I searched for this and found this under the guidance for planing permission, it is interesting in that it does not match with the further information on internal lighting under planning permission that is still to the 2006 Building regs. and also does not match the information in the building services compliance guide. Way to make things clearer, government!
Thank you for the information.

Richard Burns · Jan 28, 2012

Spikenaylor said:
so according to the domestic building services compliance guide 2010 I can use standard light fittings with bulbs like this?

lumen 1510
wattage 25W

lumens/circuit watt = 60.1

is my theory correct. or can anyone correct me.

Our Part Number 2204
Cap Description 27mm Edison Screw (E27)
Wattage 25W
Voltage 240V
Finish 864 - daylight
Length 151mm
Diameter 60mm
Energy Rating Category A
Colour Temp 6400K
Rated Life 8000hrs
Equivalent To 75W
Lumen Output 1510
Dimmable? No

As far as I am aware this would totally comply with the energy efficiency requirements (whichever one you read). I think almost all CFL, Fluorescent, metal halide and LEd lamps comply with the 45lm/W.
The only caveat I would raise is the power factor, as the 25W may not be total consumption only output,but this would not mater with your example.

Richard Burns · Jan 28, 2012

i=p/u said:
i have one comming up aswell, and the dude in edmundsons said the only ones thattick both boxes are the ones at £35 a fitting, think part L and M

Be careful of what the "dude in Edmundsons" says as he may not know what he is talking about (nor may a random guy (me) on a forum!). He is just trying to sell.
I cannot see how part M applies to light fittings as the only part M considerations apply to lighting design and accessibility and size/design of switches.

i=p/u · Jan 29, 2012

well he said the fittings which allow gu10 led bulbs dont comply as you can replace them with i.e 50W halogens . but comply with another part as are energy efficent..

so my options are fire rated with an led bulb @ £14 a fitting but dont comply with building regs cause they an be changed

or £35 a fitting wich comply with both.. which i think is too exspensive for customer, well i think they wont buy it if nearly 60 fittings throughout

Richard Burns · Jan 29, 2012

i=p/u said:
well he said the fittings which allow gu10 led bulbs dont comply as you can replace them with i.e 50W halogens . but comply with another part as are energy efficent..

so my options are fire rated with an led bulb @ £14 a fitting but dont comply with building regs cause they an be changed

or £35 a fitting wich comply with both.. which i think is too exspensive for customer, well i think they wont buy it if nearly 60 fittings throughout

The earlier regulations stated that the fitting must only be able to take low energy lamps, however this is now no longer the case, even if you can change the lamp for a non energy efficient one this does not matter. See the attachment on my post no 3 and read the supplementary information in the blue column.
This describes the two options.
LED lamps can also be considered low energy with integrated control gear.

If price is an issue then you can use Gu10 CFL lamps as they meet the >45lm/W requirement.

i=p/u · Jan 29, 2012

i know you get ten years warranty and all with fittings but some amount for lighting.. but i dont even know if money is an issue, ive just got the drawings here and working out all my options to look and sound professional..

Richard Burns · Jan 29, 2012

i=p/u said:
i know you get ten years warranty and all with fittings but some amount for lighting.. but i dont even know if money is an issue, ive just got the drawings here and working out all my options to look and sound professional..

Supply of 60 off 230V fire rated GU10 downlights by Firestop @ £9.88 ea
Fitted with 9W CFL lamps @ £6.97 ea
In accordance with The Building regualtions Part L1B and the Domestic Building Services Compliance Guide 2010

i=p/u · Jan 29, 2012

and how would you compare them to the normal halogen..

is 12v with transformer an option in energy terms

Energy Efficent Lighting

Spikenaylor

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malcolmsanford

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Richard Burns

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Spikenaylor

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oldtimer

i=p/u

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Spikenaylor

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Richard Burns

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Richard Burns

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Richard Burns

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i=p/u

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Richard Burns

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i=p/u

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Richard Burns

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i=p/u

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