Yes, plaster can attack cable insulation. Plaster contains chemicals and minerals that can degrade the insulation of cables over time, leading to potential electrical hazards such as short circuits or electrical fires. It is important to protect cables from exposure to plaster during construction or renovation projects to ensure the safety and integrity of the electrical system. Proper installation and insulation of cables can help prevent damage from plaster and other construction materials. **

If the cable insulation is only dented and not completely damaged, it may still be usable. However, it is important to carefully inspect the cable for any signs of exposed wires or damage to the internal conductors. If the insulation is compromised and the internal conductors are exposed, the cable should not be used as it can pose a safety hazard. It is always best to err on the side of caution and replace the cable if there is any doubt about its safety. **

To repair damaged insulation on a LAN or internet cable, you can start by carefully cutting away the damaged portion of the insulation using a sharp knife or wire stripper. Be sure to only remove the damaged section and not expose the inner wires. Once the damaged portion is removed, you can use electrical tape or heat shrink tubing to cover and protect the exposed wires. Make sure the insulation is secure and there are no exposed wires before using the cable again. If the damage is extensive, it may be best to replace the entire cable. **

To determine if the insulation of the plug cable is damaged, visually inspect the cable for any cracks, cuts, or exposed wires. If there are any visible signs of damage to the insulation, it is likely that the cable is damaged. Additionally, you can perform a continuity test using a multimeter to check for any breaks in the insulation. If the continuity test shows a break in the insulation, then the cable is indeed damaged and should be replaced to prevent any electrical hazards. **

To determine if the insulation of the charging cable is damaged, visually inspect the entire length of the cable for any cracks, cuts, or exposed wires. If there are any signs of damage to the outer insulation, it may indicate potential internal damage to the wires. Additionally, if the cable feels unusually stiff or brittle in certain areas, it could be a sign of insulation damage. It's important to address any insulation damage promptly to prevent potential electrical hazards and ensure the safe operation of the charging cable. **

Insulation should be done before plastering. Insulation helps to regulate the temperature inside a building and reduce energy costs, so it is important to install it before the walls are plastered. Plastering over insulation helps to create a smooth and even surface for the walls, ensuring that the insulation is properly covered and protected. Additionally, installing insulation before plastering can help to prevent any potential damage to the insulation material during the plastering process. **

The melting of cable insulation at a power outlet is a serious safety hazard. It could be caused by an overload of electrical current, which generates excessive heat and can lead to a fire. It is important to immediately turn off the power to the outlet and refrain from using it until a qualified electrician can inspect and repair the issue. Ignoring this problem could result in a dangerous electrical fire. **

I'm sorry, but I cannot physically inspect the power cable to determine if it has been drilled. However, if there are concerns about the insulation of the power cable, it is important to have a qualified electrician or technician inspect it to ensure its safety and functionality. Any signs of damage to the insulation should be addressed promptly to prevent potential hazards. **