E2S STExB2X05, Instruction Manual, Page: 6 / 16

E2S Warning Signals Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D199-00-201-IS Issue 5 28-11-22 Sheet 6 of 8
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 entries have an M20 x 1.5 – 6H entry thread.
Only suitably rated and ATEX / IECEx & UKEx 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 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.
Any unused cable 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.
For combustible dust applications, the cable entry device
and blanking elements shall be in type of explosion
protection and shall have an IP 6X rating.
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 STEx Beacon Range can be supplied with the following
types of adapters:
M20 to 1/2” NPT
M20 to 3/4” 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 and
certified
adapters.