Using multi-diameter cable sealing
Cable sealing systems are available from several manufacturers, and multi-diameter types are becoming increasingly popular due to their ease of use.
Prerequisites
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Sealing system example; the finished assembly
Electrical installations can only be done by certified electricians. All necessary tools and instruments required must be available. The installation shipyard must prepare detailed drawings of the electrical system, and identify each cable.
Context
Only a brief description of the sealing system will be presented here. Further information with relevant technical specifications and installation descriptions must be obtained from the manufacturer.
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Roxtec modules (Image from Roxtec website)
The illustrations and examples here are provided by the following manufacturer:
Roxtec International AB
Box 540
S-371 23 Karlskrona, SWEDEN
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Roxtec steps (Image from Roxtec website)
The Roxtec system is available with a large number of various modules and compression units. It will also comply with screening and EMC requirements.
Procedure
1 Cut an opening in the structure (bulkhead, cabinet etc) you wish to penetrate.
The hole must be sized to fit one of the standard rectangular or circular frames provided by the sealing system manufacturer.
Note
The chosen solution must comply with the fire and/or pressure demands for the vessel.
If the sealing is to be used under water, both pressure and material requirements must be taken into consideration.
2 Mount the frame.
3 Pull the cable(s) through the frame.
In most cases the opening will be large enough to accept the plugs on the cables.
4 Secure each cable with a square sealing module.
5 Adjust the module to fit the cable’s outer diameter.
6 When the required number of modules are installed, tighten the assembly with a compression unit.
Further requirements
For more information, and other installation procedures, refer to the documentation provided by Roxtec (or your manufacturer of choice).