Northern Lighting: Light Source Guide 2025, 2 6

northern.no
Choose the
right bulb!
This light bulb guide includes information and
advice for choosing the correct light source for
your Northern lamp. It is based on functional and
aesthetic properties of the bulbs such as shape,
size and light colour temperature, as well as more
technical aspects regarding light quality and power,
dimming, energy class and accessability. Choose
the right bulb — create the right mood! For more
information please contact us at post@northern.no
Some words about light
1000 K
2000 K
3000 K
4000 K
5000 K
6000 K
7000 K
8000 K
Watt is the measuring unit of energy consumption, but it does not tell how much light the bulb
produces. A 100W regular incandescent bulb gives more or less the same amount of light as a
11W LED bulb, but the energy consumption is different.
Lumen is the measuring unit of the total
amount of light given from the light
bulb in all directions. It does not imply
anything about energy consumption.
Candela is the measuring unit of the
amount of light given from the light
bulb in a specific direction. Only spot
bulbs with reflectors or directed LED
bulbs use this unit.
The light colour is measured in Kelvin.
A standard LED bulb usually has a colour
temperature of 2700 Kelvin (warm
colour). See chart below for a graphic
overview.
We only use four different standard socket
types in our lamps. This makes it easy to
find the right replacement bulb.
Watt (W)
Lumen (lm)
Candela (cd)
Kelvin (K)
Socket types
GU 10
E27
G9
E14