© 2016 General Electric Company. All rights reserved.186 | =GE Oil & GasRequired Practices for Explosion Proof InstallationsThe SVI II ESD is supplied with two threaded conduit entries. All wiring must be installed withapproved conduit and seals or with approved cable and cable glands according to localcodes. The spare conduit entry is plugged with a ½" NPT pipe plug. Thread engagement mustcomply with local electrical codes. The cover must always be secured before applying power.Do not connect HART ® communication devices in a hazardous area. Use of the SVI II ESD localdisplay with pushbuttons is recommended when Explosion Proof methods are applied.Clarification of TerminologyIn Factory Mutual Research and Canadian Standards Association codes, Explosion Proofmeans use of approved enclosures and conduit enclosed cables, while in ATEX code, thismethod is called Flameproof. In ATEX countries, Explosion Proof means both Flameproof andIntrinsically Safe.Recommended Practice for Severe or Humid EnvironmentsThe SVI II ESD circuitry of is encapsulated to protect from corrosive atmospheres. To preventmoisture from damaging electronic components of the SVI II ESD in high humidity or tropicalenvironments, a sealed junction box must be used. Wiring from the junction box to the SVI IIESD is sealed by flexible cable with a cable gland or with a potted nipple and pigtail, if incompliance with applicable code.
