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It really depends on where you are going to use the bulbs!

All the light bulbs do not operate the same voltage for starters, there would be nothing surprising about that, but unless you are aware of the differences between them you could be in a little shock. LED bulbs come in two primary voltages: mains voltage and low voltage.

Mains Voltage Bulbs

The mains electricity supply in the United Kingdom is 230 V Ac (Alternating Current). This is used to supply the majority of domestic and commercial lighting.

LED (Light Emitting Diodes) operate at low voltage DC (Direct Current). As such, LED bulbs that are designed to run straight off the mains, like GU10, B22 or E27, require a driver to change the voltage from 230 AC.

You will observe about GU10 LED bulbs (230 V) is that they are slightly longer than the low voltage MR16 bulbs(12 V). This is due to the fact that the driver unit is placed into the GU10 fitting.

Low Voltage Bulbs

Low voltage bulbs, are simply lights that run at a lower voltage than provided by the mains electricity supply. They used to exist in the cars where connecting to the mains electricity supply was not viable and the lights would have to run off either a 12V or 24V engine battery instead.

Low voltage lighting in houses is a recent innovation. It is created primarily for fittings in kitchens and bathrooms. Instead of being connected directly to the mains supply, an intervening transformer 'steps down' the mains voltage.

When you exchange your old halogen bulbs for MR16 LED, there is no guarantee that they will work with your existing 12 V transformer. Contact your retailer to determine whether or not you need to upgrade your system.

LED lights have come a long way in the last few years and so have the prices so keep looking. Any good LED lighting website will have info on which lights are best for the application you need them for so have a look around.

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