Can the junction box be fixed to a wooden ceiling?

Is it permissible to mount the distribution box directly on the wooden ceiling boards in the attic? And how to look at it from the point of view of fire safety? Thank.

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  • Admin

    Hello! To install wiring on wood, it is necessary to use a cable with insulation that does not spread combustion, the same applies to the junction box - its case must be made of non-combustible material or plastic that does not spread combustion. Between the cable, the junction box and the wooden surface there must be a layer of non-combustible material with a thickness of at least 10 mm. From the point of view of fire safety, wiring mounted on a wooden surface is the most dangerous. It is very important to choose the correct protective devices for protecting these wiring lines, since the lack of proper protection can lead to damage to the wiring with its subsequent fire.

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