Thanks for your answers Harald. My project is to install strips around the perimeter fencing for my swimming pool. The longest run will be around 20m which will require 4x5m strips. I am using the 5050 RGB strips that have 300 LEDs per roll or 60/m. This requires a power source for each strip so I am using an amplifier after approximately every 5m.
The RGB strips that I am using all seem to have the same pinouts - four pins or pads for +12V, Red, Green and Blue. I have tried soldering the strips and soldering two strips together to join them is not too bad as they can sit on top of each other, but soldering wires onto the pads on the strips is something that I find extremely difficult as the pads are so small and my soldering skills are not great. I have taken to use the clamp connectors but they are sometimes not so stable, although using shrink wrapping does help. I am running the strips along the top of the fencing and I am splicing at each fence poll which means as less as 1m between splices up to about 3m between splices. Is it ok if I put on shrink wrapping first and then use silicone to seal the shrink wrapping to the strip/wires? The problem with using the silicone first is that it gets very messy if you have to redo the connection which can sometimes happen.
To power the amplifiers I am planing to use landscape lighting wire - likely 12 gauge. This wire is generally used to run 12VAC loads whereas I will be running 12VDC from a transformer that I have in a pool shed. The amplifiers I am using are about 10mmx30mmx3mm.
I believe that the strips that I am using have a maximum power draw of 72W/5M roll. Therefore for my DC power supply cable that is feeding the amplifier I will be at 216W as the first 5M run will be powered directly from the lighting controller. Can I run 216W @12vdc
or 18A over 12Ga wire? I would think I can as 12 gauge wire is much thicker than the copper traces on the strips that are handling 6A at the beginning of the strip.
I have bought a bunch of different strips from Amazon and eBay. I have also tried buying locally and they actually look the same so I am not sure that buying locally makes sense as you are looking at C$50 vs C$12 on Amazon or ebay.
My light strips will be run roughly where the red lines are in this photo:
FYI - the connectors I am using look like this (except the clamp connectors on both ends):
The amplifiers look like this: