Less aesthetic since it is applied to walls, this solution of rigid pipes for electrical circuits is mainly used in wet rooms or annexes such as cellar, garage, attic...
This type of installation is built like a great mechanic thanks to the elbows, sleeves, tees... The pipes are fixed by dowels and clamps. Two systems are possible to ensure the tightness between the switchgear and the pipe: a seal (our example), which penetrates with the cable into the switchgear, or a cable gland. Only the cable then enters the switchgear (socket or switch).
Some rules to respect
• Only use cables (never wires) in the IRL pipes.
• Do not occupy more than one third of the space in the pipes.
• Leave a space of 3cm between the pipes.
• The conductors must be continuous (connections in suitable boxes).
Put an IRL power supply and a waterproof plug in a damp room
Secure the enclosures to the partitions. Use for this purpose dowels and screws adapted to the nature of the wall.
Trace the axes corresponding to the passage of the cables using a spirit level or a metal ruler.
Place the fixings at 10cm from the boxes, at each change of direction, then every 60cm approximately.
Cut the pipes to the desired length using a fine saw blade, such as hacksaw.
Slide the cables into the pipes.
You can help yourself with a cable puller to facilitate the operation.
Cut out the seal.
Its size depends on the size of the pipe to be connected.
Put the pipes in their places and push them a few centimeters into the equipment.
Close the collars that hold the pipes. They simply clip, without the need for tools.
Connect each conductor to supply the equipment (switch or plug) in accordance with the color code.
Put the covers of the equipment in place. They clip without tools on the projecting boxes.