twin and earth

I need to cut out a damaged section of 10mm twin & earth cable and reconnect it - whilst the cable isn’t actually exposed, it is in a vertical position where it’s likely to get damp and drips on it. Are there any IP68-style connectors designed for this, or will I need to silicone a round cable...

Hi I've run some cables through a wooden joist but quite a small hole so the cables are very close to each other at this point. Is this going to give me temperature issues when I want them connecting upto a shower, the water tank and an oven? The oven is single electric oven and came with a...