Jul
Summary:
NFPA 70B is no longer just recommended guidance, it’s now a compliance standard for electrical equipment maintenance. For facility managers, that means maintenance programs need structure, records, qualified work, and measurement practices that support safe, dependable operations.
NFPA 70B emphasizes preventative maintenance
For years, NFPA 70B was treated as a set of recommended practices for electrical equipment maintenance. That changed with the 2023 edition, which elevated NFPA 70B from recommended guidance to a compliance standard.
NFPA 70B covers preventive maintenance for electrical, electronic, and communication systems and equipment used in industrial plants, data centers, commercial buildings, institutional facilities, and the like. Each of these facilities is required to have a formal, documented electrical maintenance program (EMP) that matches its equipment, risk, operating conditions, and safety needs.
An effective, proactive EMP should include:
- A current list of electrical assets
- Inspection schedules based on equipment type and criticality
- Written maintenance procedures
- Testing records
- Corrective action records
- Qualified personnel for assigned work
- A way to evaluate trends over time
The goal is safer equipment, less unplanned downtime, and better operational decisions.
NFPA 70B readiness check
If you’re unsure where to begin setting up a proactive EMP, use these questions as a starting point:
- Do you have a current electrical asset inventory?
- Are maintenance frequencies documented?
- Are inspection and testing procedures written down?
- Do your records include power quality or energy data where needed?
- Are records stored where they can be found?
- Can your team explain recurring events with measured evidence?
- Do you know which systems are most critical to uptime and safety?
If the answer is “not yet” to several of these, you’ll want to set some priorities. Start with the equipment that carries the highest risk. That may include switchgear, transformers, motor control centers, emergency systems, production equipment, healthcare systems, data center infrastructure, or other mission-critical loads.
Tools to support a proactive EMP
NFPA 70B outlines best practices for testing and diagnosing electrical systems, including:
- Insulation resistance testing
- Thermographic inspections
- Power quality analysis
Using the right testing and inspection tools for the above tasks enables your maintenance team to work efficiently, and detect and respond to potential problems before they cause equipment failures.
If your team is building or updating an EMP for NFPA 70B, Dranetz and the other GMC Instruments brands can help with the electrical testing side of the work. Our instrumentation includes power quality meters, digital multimeters, cable and insulation testers, field calibrators, and earth resistance testers. These high quality, competitively priced tools are all backed by responsive customer service as well as ISO 9001 accredited, NIST traceable on-site and lab-based calibration services.
Learn more about NFPA 70B and GMC Instruments’ electrical testing solutions.
FAQs
What is NFPA 70B?
NFPA 70B is the Standard for Electrical Equipment Maintenance. It covers preventive maintenance for electrical, electronic, and communication systems and equipment in facilities such as industrial plants, commercial buildings, data centers, and institutional buildings.
Did NFPA 70B change in 2023?
Yes. The 2023 edition changed NFPA 70B from a recommended practice to a compliance standard with mandatory requirements for electrical maintenance programs.
What best practices does NFPA 70B cover?
NFPA 70B outlines best practices for testing and diagnosing electrical systems, including:
- Insulation resistance testing
- Thermographic inspections
- Power quality analysis
These tests are crucial for detecting hidden faults, ensuring energy efficiency, and preventing equipment failures.