European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH
www.e2s.com
Tel: +44 (0)208 743 8880
Document No. D156-00-401-IS
Issue 4
28-11-22
Sheet 5 of 7
External earthing connections should be made to the M4
earth stud, using a ring crimp terminal to secure the
earth conductor to the earth stud. The external earth
conductor should be at least 4mm2 in size.
7.3. Cable Glands, Blanking Elements & Adapters
Follow the minimum temperature ratings of cables and cable
glands according to the approvals applied.
ATEX / IECEx & UKEx Requirements
For high ambient temperatures the cable entry
temperature may exceed 70ºC or the cable branching
point temperature may exceed 80ºC and therefore
suitable heat resisting cables and cable glands must be
used, with a rated service temperature at least as
stated below:
Table 2: ATEX / IECEx & UKEx Min. Ratings of Cables &
Cable Glands.
NEC / CEC Requirements Only
For high ambient temperatures the cable entry
temperature may exceed 60ºC or the cable branching
point temperature may exceed 60ºC and therefore
suitable heat resisting cables and cable glands must be
used, with a rated service temperature at least as
stated below:
Table 3: NEC / CEC Min. Ratings of Cables & Cable Glands.
Cable Glands & Blanking Plugs
Appropriate cable glands to be customer supplied.
ATEX / IECEx & UKEx Requirements Only
The cable gland entries have an M20 x 1.5 entry
thread. Only suitably rated and ATEX / IECEx & UKEx
certified cable glands which must be suitable for the
type of cable being used and also meet the
requirements of the current Ex ‘d’ flameproof installation
standards EN 60079-14 / IEC60079-14.
If the installation is made using conduit, openings must
have a sealing fitting connected as close as practical to
the wall of the enclosure, but in no case more than the
size of the conduit or 50mm, whichever is the lesser.
When only one cable entry is used the other entries
must be closed with suitably rated and ATEX / IECEx &
UKEx certified blanking plugs.
NEC / CEC Requirements Only
The cable entries have an M20 x 1.5 – 6H entry thread.
If the installation is made using cable glands, only
suitably rated and certified cable glands must be used.
They must be suitable for the type of cable being used
and also meet the requirements of the current NEC /
CEC installation standards.
If the installation is made using conduit, openings must
have a sealing fitting connected as close as practical to
the wall of the enclosure, but in no case more than the
size of the conduit or 50mm, whichever is the lesser.
For use in Class I Division II locations, in order to
maintain the db type protection, flameproof conduit
seals and/or cable glands must be used.
Any unused cable entries must be closed with suitably
rated and certified blanking plugs.
Ingress Protection
Follow instructions according to the approvals applied.
ATEX / IECEx & UKEx Requirements Only
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable
glands or blanking plugs. A minimum ingress protection
rating of IP6X must be maintained for installations in
explosive dust atmospheres.
NEC / CEC Requirements Only
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable
glands or blanking plugs. A minimum ingress protection
rating of IP6X must be maintained for installations in
explosive dust atmospheres.
Adapters
The GNEx Beacon Range can be supplied with the following
types of adapters:
M20 to ½” NPT
M20 to ¾” NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted
onto adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated as per the
applicable standards.
