NFPA 70B Is Now A Must-Do
NFPA 70B may have been your “yeah, we should probably be doing that” task for years.
But things changed in 2023. If you haven’t taken another look since then, the short version is that “should” became “shall.”
NFPA 70B now sets a standard instead of a recommended practice. (The 2026 edition that just came out didn’t change that materially.)
This is just a catch-up, not a tutorial. For the full text, definitely go straight to NFPA, who sells it directly. NFPA also has a free overview on 70B, which is a decent 10-minute read. You might also like OSHA’s letter of interpretation on how they treat NFPA standards in enforcement, NETA World Journal’s breakdown of the shift from recommended practice to standard, and the 2023 IEEE Electrical Safety Workshop paper on the new 70B.
A quick refresher on the code sections we’re talking about
So you don’t need to dig through all the regulation and can get to the practical part, here’s an overview.
You probably know the three-legged stool:
- NFPA 70 (the NEC) covers installation.
- NFPA 70E covers how workers stay safe around electrical equipment, which means arc flash boundaries, PPE, lockout-tagout, and test before touch Occupational Safety and Health Administration.
- NFPA 70B is the third leg: how the equipment itself gets maintained, so it doesn’t become the reason 70E gets invoked.
These three basically talk to each other.
OSHA views 70E as the primary consensus standard for electrical hazards and uses it to support citations under its own standards. And 70E in turn points readers to 70B for maintenance. That chain is how a 70B gap can end up on an OSHA inspector’s radar even though OSHA doesn’t cite 70B directly.
What changed in 2023
Three things matter for how you run the floor:
It’s enforceable now. The “shall” language means an Authority Having Jurisdiction (AHJ, e.g., an insurer, corporate safety, state inspector, whoever) can hold you to it.
NFPA’s own position is that 70B is now an enforceable resource the AHJ can use to ensure electrical equipment is properly maintained, and OSHA already uses consensus standards like these to support citations under its own rules.
You need a documented Electrical Maintenance Program (EMP). A documentation binder isn’t enough. You need an actual program with an appointed coordinator, an inventory of equipment, an inspection and testing schedule, a corrective-action process, and records retention.
Per NFPA 70B, the equipment owner “shall” implement and document an overall EMP that directs activity appropriate to the safety and operational risks, and the EMP “shall” include an electrical safety program addressing the condition of maintenance.
Maintenance intervals come from Equipment Condition Assessments. Every asset gets scored on three dimensions (physical condition, criticality, and operating environment), from Condition 1 (best) to Condition 3 (worst).
NFPA 70B uses those condition assessment criteria to set the frequency of testing. For power circuit breakers, Condition 1 equipment can go up to 60 months between tests, while Condition 3 equipment requires annual service. So a perfectly healthy breaker feeding a critical line still gets treated like a critical asset, … because it is one.
The part that trips people up
Having an EMP on paper isn’t the same as having one in practice.
The standard wants evidence that inspections happened, that findings got logged, and that corrective actions closed out. That takes two things working together:
- A way to know the real condition of your equipment
- A way to schedule, assign, and document the work that follows from it
Most plants get the second half covered by their CMMS or equivalent scheduling system. The first half, which is knowing actual condition rather than assumed condition, is where facilities can take different paths.
Ways to Get To a 70B-aligned EMP
There’s no single right answer here. Each of these approaches can be part of a compliant program, and most plants end up stacking two or three.
The following table of common options is ordered roughly by rigor of the condition data produced, from continuous source-level electrical data at the top down to interval-only approaches at the bottom.
| Approach | Pros | Cons |
|---|---|---|
| Wired electrical monitoring (installed by a licensed electrician on/ inside the gear) | Continuous, source-level electrical data. Reliable data signal even in large or RF-noisy facilities. Defensible documentation. NEC-consistent install. | Requires professional install. May take an outage window. |
| Wireless clip-on condition monitoring (sensors on the outside of the asset) | Continuous data. Fast install. No electrical work needed. | Environmental and RF limits in industrial settings. Signal quality can degrade at scale. Easier to dislodge. |
| Route-based vibration analysis (contracted or in-house) | Strong for rotating equipment. Established methodology. | Mechanical bias. Electrical faults can slip past. Interval-driven, not continuous. |
| Infrared / thermography routes (annual or semi-annual, usually contracted) | Directly referenced by NFPA 70B as part of required preventive maintenance testing. Good for finding hot connections. | Snapshot in time. Misses anything that shows up between scans. |
| Time-based preventive maintenance (CMMS-driven, interval-based) | Structure, documentation, paper trail. Universal baseline. | No condition data. You’re maintaining on the calendar rather than on reality. May mean inspecting equipment that would have been fine. |
A CMMS or equivalent scheduling tool sits underneath all of them. Without one, you can collect all the data in the world and still fail an audit because the required actions never got closed out, or you at least can’t prove it.
Where we fit
Watt Window gives you wired mechanical and electrical monitoring, alongside greater production energy use resolution.
We offer you continuous monitoring with reliable dataflow, confident installation by licensed electricians, and the flexibility of feeding our data into the CMMS you already use.
We think that combination gives you the best mix of benefits and holds up under a 70B audit for facilities with meaningful motor loads. We can connect you with trusted installers if you’d like.
Ours isn’t the only way. But even if something else makes more sense for you, be sure to implement something reliable.
The real failure mode isn’t picking the wrong tool but having no program at all (or having one that only exists in a binder nobody touches).