Avaya EA401 Installation And Operation Manual - Page 18

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APPENDIX A (cont.)
CLASS II, DIVISION 1 & 2, GROUP E
Atmospheres containing combustible metal dusts regardless of resistivity, or other combustible dusts of
similarly hazardous characteristics having resistivity of less than 10 5 ohm-centimeter
CLASS II, DIVISION 1 & 2, GROUP F
Atmospheres containing carbon black, charcoal, coal or coke dusts which have more than eight percent
total volatile material (carbon black per ASTM D1620; charcoal, coal and coke dusts per ASTM D271)
or atmospheres containing these dusts sensitized by other materials so that they present an explosion
hazard, and having resistivity greater than 100 ohm-centimeter but equal to or less than 10 8 ohm
centimeter.
CLASS II, DIVISION 1 & 2, GROUP G
Atmospheres containing combustible dusts having resistivity of 100000 ohm-centimeter or greater.
NOTE: This appendix is a summary of information contained in the National Electrical Code. Please
refer to local applicable Electrical Codes for details and latest update.
The EA401 Explosive Atmosphere Telephone has been approved by Canadian Standards Association
(CSA) and listed by Underwriters' Laboratories (UL) for use in explosive atmospheres.
Locations that may require explosion-proof equipment include:
•
chemical plants
•
petrochemical plants
•
offshore drilling rigs
•
land-based drilling rigs
•
gas plants
•
oil & gas metering facilities
•
refineries
•
fueling stations
•
breweries and distilleries
•
P4011 Model EA401 Standard Telephone
•
P4021 Model EA401 With Internal Ring Detect Relay
•
P1011 Model EA401 Assembly With CE20 Line-Powered, Explosion Proof Ringer

APPENDIX B - Applications

APPENDIX C - EA401 Models and Options

•
defense installations
•
munitions storage depots
•
missile silos
•
liquefied natural gas terminals
•
tankers and tanker depots
•
paint and varnish manufacturing plants
•
grain processing and similar industries
•
bulk loading stations
•
fertilizer plants
Page 18
Installation and Operation
Model EA401