Bulbs not included, click here to buy.
This spot requires a transformer (not included), click here to buy one:
How to choose a transformer.
1) Choose a transformer which power is greater than or equal to the sum of all spots power.
2) It may be necessary to use more transformers to reach power needed
1) You have to install two 20W spots: total power applied is 20Wx2=40W
2) You can use a transformer with a power range between 10W up to 60W (infact total power of the spots is less than 60W)
1) You have to install five20W spots. total power applied is 20Wx5=100W.
2) If the power range of your transformers is between 10W up to 60W it's clear that just one transformer is not enough to feed 5 spots. So you need at least 2 transformers. Link three spots (3x20W=60W) to one transformer and the other two (2x20W=40W) to the second transformer.
How to install a low tension spot using a transformer.
WARNING: RISK OF DEATH! BEFORE PROCEDING SWITCH OFF ELECTRICITY AT THE MAIN!
A transformer is a device that transforms main voltage (230-240V) incoming in its primary circuit into low voltage (12V) outgoing from its secondary circuit.
Connect spot cables with the secondary circuit of the transformer (one cable for each clamp of the secondary circuit). Switch off alectricity at the main, then connect main cables with the primary circuit of the transformer: Live (red cable) with live; neutral (blue) with neutral. Never invert polarity or short circuit.
Warning: an electric shock may be fatal, if any doubt please contact a qualified electrician.