01689 606342

40va, Surface, IP66, exterior transformer, Black - 12 v ac

The T9504  surface-mount 12v weatherproof wire-wound (magnetic) transformers is resin-potted into black polycarbonate boxes, for mounting on a wall or post, hidden behind planting and landscape features, under decking or in outbuildings. Each transformer has a self-resetting thermal cut-off to protect against overload, 1m mains input cable and 60cm 12v output cable for connection using separate weatherproof junction boxes (cable & connections carrying different voltages must be segregated). Both cables enter the case at the same end, allowing neat connection into junction boxes below when mounted on a post. The T9502 can be mounted to a 3" fence post or T9599 Stainless steel spikes are optional.

Low voltage transformer loading example

The majority of exterior waterproof low voltage transformers are wire wound ( magnetic) torodial which are sealed in hard resin to prevent water ingress. The transformer must be loaded to 70% of it maximum capacity for it to function correctly. If you are going to put LED lamps on the transformer we recommend loading it to 80% of its maximum load capacity.

Transformer location and low voltage cabling

1.     Try and keep cable runs from transformers to garden light fittings as short as possible to ensure optimum performance, no
         more than two metres to the first lamp.

2.     Locate a transformer centrally amongst a group of garden lights it is to power; e.g. a radius of 8 metres for 5w lamps

3.     If you decide to run 2 sets of garden lights operated by separate switches, you must provide 2 separate transformers & circuits.

4.     Try not to put more than 10 lights on any one transformer otherwise voltage drop can reduce lamp and transformer performance.

5.     Try to avoid putting cable runs straight through the middle of the garden and try to run them along the fence line first, this will
        reduce the risk of putting a spade or fork through them when gardening.

6.     Where possible always try to keep the transformer above ground mounted on a fence post or spike, if you do have to bury them  make sure you use the burial kits and fill with resin to reduce water ingress.



IP rating

Wire wound (magnetic)transformer resin-potted into a black polycarbonate box, with a 1 m mains input cable and 60cm 12v low voltage cable

Input voltage
240v input

Connect 1 metre mains cable into a weatherproof junction box and 60cm low voltage cable with a T9963 jointing kit

Item Specifications

Voltage: 12v
IP Rating: IP66
Materials: Polycarbonate
mounting: Surface mounted