Techmar 12v TRANSFORMER 22w Low Voltage Outdoor Transformers (Ecodesign)
TECHMAR original product
Transformer (transforms mains 230v to safe 12v) - 22w power output.
Transformer 12v 22w, with UK 3-pin plug and 2m cable has been designed to Ecodesign regulation 1194/2012
Fits all plug & play cables by TECHMAR. Can be fitted safely outdoors but the 230v mains 3-pin plug should be fitted in a waterproof housing.
This high quality transformer comes pre-fitted with a UK 3-pin plug and approximately 2 metres of 230v cable. It also has it's own internal fuse.
The 2 metre cable allows the transformer to be sited in a convenient position next to your 230v socket outlet. Just plug it in, switch on and the UK mains and 230v AC power is reduced to safe 12v AC power.
If the total power consumption of your garden lights is very near to, or exceeds, the power output rating then you should either upgrade to a more powerful transformer or split your cabling runs and use more than one transformer.
The transformer can be fitted safely outdoors but if the 3-pin plug is to be sited outdoors then it should be fitted in a waterproof electrical socket housing similar to the one shown below:
The image shown above is from the Screwfix catalogue (BG Nexus 13A 2G RCD Switched Socket but equivalents are readily available from good electrical wholesalers.
An RCD is a residual-current device, or residual-current circuit breaker (RCCB), is a device to quickly disconnect current to prevent serious harm from an ongoing 230V electric shock.
All transformers are weather proof (IP67 rated) but we just think it's good practice to house them. It keeps the British weather off the transformer's casing and cables; and just helps tidy the view! You can paint the boxes too if you don't like grey!
We use simple weatherproof boxes (e.g. from Screwfix - IP55 Enclosure) but again readily available elsewhere.
NB: If you leave the transformer outdoors, whether or not it's housed, make sure it's lifted and fitted well off ground to avoid being flooded or buried in snow; and use common sense when near to water bearing fittings such as down pipes, leaking gutters, ponds etc.
Base plate footprint:
Width 86mm x Depth 53mm x Height 60mm with four mounting holes for fixing screws.
NB: If housing the transformer in a weatherproof box or fitting into a tight area then remember to allow some room for the pre-fitted and sealed 230v input cable and the 12v exit cable.
The following dimensions should be adequate (allowing for normal cable entrance/exists etc).
Base plate footprint plus cable entrance and exits:
Width between 150 - 165mm x Depth 53mm x Height 60mm with four mounting holes for fixing screws.
If in any doubt use the larger width (165mm) and this will ensure the pre-fitted cables are cleared before normal flexible cable can be manipulated to the final position.
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