Collingwood Catalogue 2024

Series / parallel wiring

LED lighting products can be wired in either Series or Parallel and both have their advantages.

Series

Parallel

Series wired products that require a separate constant current driver.

Parallel wired products that require a separate constant voltage driver.

LED

LED

Driver

Driver

LED

LED

Building regulations

Specifically related to the UK, the following building regulations should be complied with, where appropriate.

When a hole is cut into a fire barrier (e.g. a fire rated ceiling), an appropriately fire-resistant luminaire must be used to block the hole from any pathway in the event of a fire in the room. All Collingwood downlights are fire rated and designed around our patented fire-resistant technology. Part B - Fire protection When a hole is cut in an insulation barrier (e.g. a ceiling tile or plaster ceiling), air and moisture can travel into the ceiling void. Part C rated downlights can assist in energy saving by preventing heat loss from a room. The H4 Pro range are the only Part C rated adjustable downlights available in the market. Part C - Moisture protection In multi-floor buildings, such as hotels and apartment blocks, sound can permeate throughout the building causing annoyance to neighbours and colleagues. With a Part E rated downlight, testing is carried out to ensure it is resistant to sound being transferred through partitions. Part E - Acoustic protection Covers all aspects of proper installation of electrical components. All Collingwood products have been designed to easily allow installation to Part P, but we recommend that they should be installed by a qualified electrician or a suitably competent person. Part P - Electrical safety LEDs are an energy efficient technology, however not all LED products are created equal. Part L ensures that only the most efficient products are installed, so that as little energy as possible is used, and therefore energy bills are lowered. New or existing Dwellings: each internal light fitting should have lamps with a minimum luminous efficacy of 75 light source lumens per circuit-watt. Buildings other than dwellings: General lighting, has an average luminaire efficacy of 95 luminaire lumens per circuit-watt Display lighting, have an average light source efficacy of 80 light source lumens per circuit-watt Part L - Conservation of energy

SDCM (standard deviation colour matching)

SDCM refers to the colour consistency between light sources. SDCM is a different naming convention for MacAdam Ellipses, both terms are internationally accepted. A SDCM is a scientific term given to light sources that the human eye should not be able to distinguish a difference between in an installation. Collingwood Lighting commits to ensuring that its illumination products have colour consistency.

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