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IS Circuits?
One
More than 1
Enclosure (IS Circuits = One)?
- Metallic
- Non-metallic
Enclosure (IS Circuits > 1)?
- Metallic
- Non-metallic
Location (One, Metallic)?
- Hazardous
- Non-hazardous
Location (One, Non-metallic)?
- Hazardous
- Non-hazardous
Location (More than 1, Metallic)?
- Hazardous (NOT Group IIIC)
- Non-hazardous
Location (More than 1, Non-metallic)?
- Hazardous (NOT Group IIIC)
- Non-hazardous
Uncertified,
greater of IP2X and location,
3 mm clearance to earth
Uncertified,
avoid light metal,
greater of IP2X and location,
3 mm clearance to earth
Ex 'e' (Group II) or
Ex 't' (Group III) enclosure
Uncertified,
greater of IP2X and location,
3 mm clearance to earth,
6 mm between circuits
Uncertified,
avoid light metal,
greater of IP2X and location,
3 mm clearance to earth,
6 mm between circuits
Ex 'e' (Group II) or
Ex 't' (Group III) enclosure,
6 mm between circuits

1

by Moorthy

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