I was given a second hand waterproof metal electrical enclosure that I plan to use to house some of my hardware. Early plans are to install 2 x power supplies and a E6804 controller. All of my power supplies and controllers were inside last year and I ran cabling outside to my lights (everything seemed to work well). My thoughts were to place this new enclosure and it's hardware right next to my new matrix. What precautions do I need to take?