I'm about to replace my old damaged Pentair SAM pool light with a more maintainable Pentair Amerlite. I removed the screw and took out the whole Pentair SAM. Since the light was already damaged because of a water leak, I decided it was useless for me so I cut the power cable a few inches from the Pentair SAM light to use as a fishing cable for the new Pentair Amerlite cable. All I know about the niche is that it's a stainless steel niche, I can't see any signs of the brand or model. Before getting into the pool, I decided to record some video and take some pictures of the niche so I can have a better idea and understanding of the situation before diving into the pool. I found that there is a screw and something that looks to me like a clamp, where the power cable goes through. I need your help to identify what is that screw for and if I unscrew it, will it loosen up the cable so that I can pull it from the other side? Or will it cause water to leak while I pull the cable from the other side? I also thought this might be for the ground cable, but to my surprise, when I removed the light, there was no ground cable attached to the niche. Any help will be much appreciated. Attaching photos of the niche and the mentioned screw
Thanks in advance!
Thanks in advance!