Views: 80 Author: Site Editor Publish Time: 2017-05-08 Origin: Site
Mixing of Codes is Usually Not Permitted, and this equally applies to cable glands or cable connectors.
Accepting that Flameproof is not Explosion Proof and vice versa is very important, and whilst some confusion frequently occurs between both the terminology and understanding of the principles involved, the two concepts follow distinctly different testing and installation standards. For this reason alone great care should be taken when indulging in selection and installation from differing codes of practice.
Here is a comparison of the testing methods adopted for Ex d IIC Cable Glands to IEC 60079-1 & Class I Division 1 ABCD (NEC) Explosion Proof Cable Connectors to UL 2225 intended for use in hazardous locations, specifically for use with Ex d IIC (IEC) & Class I Division 1 (NEC or CEC) Explosion Proof apparatus.
CABLE ENTRY DEVICES - PRODUCT CERTIFICATION TESTS | ||
Protection method | Ex d | Explosion Proof |
STANDARD | IEC 60079-1 | UL2225, CSA 22.2 |
HYDROSTATIC PRESSURE TEST AT | 450 PSI FOR 2 MINUTES | UP TO 2000 PSI FOR 2 MINUTES |
ENCLOSURE TYPE / SIZE USED FOR EXPLOSION TESTING | NOT APPLICABLE | EXPLOSION PROOF 29 LITRES ENCLOSURE VOLUME |
A compound barrier type (seal type) cable gland must always be used, under the NEC / CEC wiring code rules, for any Class I Division 1 or Division 2 explosion proof equipment installed in hazardous locations.
