Can fiber insulated pipe wires be buried in cement walls?
Fiber insulated sleeves is yellow wax tubes, if it is a yellow wax tube wire, is buried in the wall, but the electrical construction specification is the use of yellow wax tube is not allowed, because after the use of the yellow wax tubes if the wire problems, there is no way to update the electric line.
Polyvinyl chloride fibre glass hose (Huang Laguan): an electric insulating paint tube made of E-glass fibre woven and coated with polyethylene resin.