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FW-F103-P-XN-M_v2002_03_EN.docx
4.4.5 USING CONDUITS AND CONDUIT HUBS WITH A PLASTIC ENCLOSURE
It is possible to use the plastic enclosure in combination with 1 or 2 conduit hubs of 1/2".
For this purpose, two ordering types have been added:
Type HGL: 2x 1/2" conduit hub entries – fitted with internal earthing plate
Type HGT: 1x 1/2” conduit hub entry – fitted with internal earthing plate
Fig. 19: Dimensions – Plastic enclosures for conduit hubs
The 1/2" conduit hubs are not delivered together with the unit and must be purchased separately.
Please make sure to select conduit hubs that are suitable for the application and suitable for the
hazardous area they are being installed into. The entry holes available for the conduit hubs are 7/8” /
22mm and must be able to accommodate a panel thickness of 5 mm. Furthermore, it is advised to
limit the height the conduit hub intrudes into the enclosure to about 10mm.
MAKE SURE THAT THE CONDUITS, CONDUIT HUBS AND PROTECTIVE EARTH
CONDUCTOR ARE INSTALLED CORRECTLY TO ENSURE PROPER PROTECTION OF
THE INSTALLATION.
Because of the isolating nature of the plastic enclosure, an internal earthing plate is supplied where
the conduit hub body is inserted into and screwed tight with the nut. This automatically connects the
conduits to the earthing plate. On top of the earthing plate, provisions have been made to connect
the external Protective Earth (PE) conductor.
Fig. 20: Plastic enclosure with conduit hubs and internal earthing plate
Please see paragraph 4.5.2 for more information on the electrical installation of the Protective Earth.
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