Relevant Standards and Regulations



NFPA 70 (National Electrical Code)

Article 501 covers electrical installations in Class I, Division 2 hazardous locations.

ANSI/ISA-12.12.01-2015

Control Systems for Hazardous (Classified) Locations, Part 1: General Requirements

IEC 60079-11

Electrical installations in hazardous areas (IECEx) - Part 11: Use of equipment in hazardous areas other than mines susceptible to firedamp

Battery Properties and Considerations



Sealed Lead Acid (SLA) Batteries

Commonly used in hazardous locations due to their sealed construction and low maintenance requirements.

Ventilation

Batteries may release hydrogen gas when charging, so adequate ventilation is essential.

Isolation

Batteries must be isolated from potential ignition sources, such as sparks or flames.

Specific Guidance



NFPA 70 (NEC) Article 501.10(B)

Batteries are permitted in Class I, Division 2 locations if they are specifically approved for such use.

ANSI/ISA-12.12.01-2015

Section 4.1.2 covers the use of batteries in hazardous locations, including requirements for containment, ventilation, and isolation.

IEC 60079-11

Section 11.2.3 provides guidance on the selection and installation of batteries in hazardous areas, including requirements for spark suppression and isolation.

Additional Resources



Battery Council International (BCI): https://www.batterycouncil.org/ International Electrotechnical Commission (IEC): https://www.iec.ch/ National Fire Protection Association (NFPA): https://www.nfpa.org/* Instrument Society of America (ISA): https://www.isa.org/Important Note:

It's crucial to consult with qualified electrical engineers or safety professionals for proper guidance and to ensure compliance with all applicable requirements before using 12V batteries in C1D2 hazardous locations. Flag for review