We often get asked how and what connections to use for extra low voltage garden lighting.
This question can often be answered by examining the location the lights are situated in. For example if a light is being mounted in a tree or on a wall, then crimping and heat shrinking is ideal as it’s discreet. For other locations using an iprated junction box with feeds off into 3-4 lights within an area would make sense, you can then crimp and heat shrink the final connection to the light.
The other issue that needs to be taken into consideration is protecting the cable. This can be done by using crimp and heat shrink to cover the cable in conduit, this method can be used to protect all the cable. This is not always as easy to do with junction boxes or gel boxes for each light. Split conduit can help over come this issue but it is worth considering when choosing your connection method. Gel boxes are a quick and good option for waterproof connections but can be expensive when compared to all other options.
Finally, another good tip is to always use liquid tape to cover the crimps before applying the heat shrink as this creates a very strong and well protected connection. In terms of cable we would always recommend H07 cable or at the very least H05. These cables have good protection from water and heat damage, that the cable is likely to encounter in the outdoor working environment.