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- Article 501
Article 501 covers the requirements for electri‐ cal and electronic equipment and wiring for all voltages in Class I, Division 1 and 2 locations where fire or explosion hazards may exist due to flammable gases or vapors or flamma‐ ble liquids Informational Note: For the requirements for electrical and electronic equipment and wiring for all
- 501. 15 (D) Cable Seals, Class I, Division 1.
In the 2017 NEC ®, the rule for sealing cables in a Class I Division 1 location now requires the seal-off fitting to be within 18 inches of the enclosure where the cable terminates or as required by markings on the enclosure
- NEC Article 501: Class I Hazardous Locations | EC M
To be considered explosionproof, the seals must meet the following requirements [501 15 (C)]: • Enclosures must have an integral means for sealing or for using sealing fittings listed for the location •The sealing compound must seal against vapors, be impervious to the environment of use, and have a melting point of at least 200°F
- Appleton NEC 2014 Code Review - Emerson
All Appleton® products intended for use in Class I locations are designed to conform to the requirements in NEC® Sections 500 5(B)(1) and (2), and enumerated in Section 500 7(A) for “Explosionproof Equipment” as defined in Article 100
- Article 501: Class I Locations - Mike Holt
When you have a Class I installation, you must follow Article 501 When doing so, you will need to refer back to Article 500—which defines two types of Class 1 locations: Division 1 and Division 2 You have Division 1 where the Class 1 ignition sources may be present or are present
- Fuses for Hazardous Locations # 3186 - Eaton
Only certain fuse types are permitted to be used in general purpose enclosures 501 105(B)(5), 501 115(B)(3) 501 115(B)(4) address the use of fuses in Class I Division 2 locations (See Figure 1)
- NON-INDICATING LOW AND MEDIUM VOLTAGE FUSES FOR USE IN HAZARDOUS LOCATIONS
NEC section 501 115 (B) (3) and CEC article 18-150 references use of “non-indicating, filled, current-limiting” fuses in Class I Div 2 hazardous locations Only certain fuse types are permitted to be used in the general purpose enclosures for class 1 Div 2 applications
- Sealing at Class I, Div. 2 boundary discussion | Information by . . .
To comply with NEC Article 501 15 (B) (1) I placed an explosionproof male-female union on the hub of the box followed by an explosionproof seal within the 18 inches from the enclosure
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