Is it mandatory to use flexible tubes in explosion-proof CCTV systems?

The use of flexible tubes (flexitubes) in explosion-proof CCTV systems is not universally mandatory, but is often required depending on the specific installation environment and applicable safety standards.

In environments where explosive gases, vapors, dust, or other hazardous materials are present, explosion-proof systems must meet strict safety regulations. If cables are exposed to these hazards must be properly protected to prevent potential ignition. In many cases, flexible tubing (or other protective conduits) is used to shield cables from environmental threats and prevent sparks from escaping.

Explosion-proof CCTV systems often need to comply with international standards like ATEX (Europe) , IECEx (International) or CNEX (China). These standards outline the types of protection required for equipment used in hazardous environments. While the use of flexible tubing isn't explicitly mandated, the protection of cables and electrical components from hazardous materials is, which makes flexitubes a common solution.

If the environment requires cables to be routed through tight or complex spaces, flexible tubing is often the preferred option because it provides the necessary protection while allowing easy installation and maintenance.

Rigid conduits or armored cables may also be used as alternatives to flexible tubing in some explosion-proof CCTV installations. The choice of conduit depends on the installation requirements, such as mechanical protection, routing flexibility, and ease of maintenance.