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24 July 2026

Inside a NEN 1010 Inspection: Visual Checks, Measurements, and Documentation

If you are responsible for a building, installation, or workplace, a NEN 1010 inspection is about more than ticking a box. It is about understanding whether an electrical installation has been assessed carefully, whether risks are visible, and whether the results are documented clearly enough to support safe use. In this article, you will learn what happens inside a NEN 1010 inspection, with a focus on visual checks, measurements, and documentation.

For many organizations, electrical safety can feel technical and difficult to oversee. A structured inspection process makes that manageable. By breaking the inspection into clear steps, it becomes easier to understand what is being checked, why it matters, and how the findings support safer operation.

Wassenaar Inspecties specializes in NEN and SCIOS inspections of business equipment and works quickly, reliably, and effectively. The company focuses exclusively on these inspections and uses modern equipment and software to work efficiently. That combination helps keep inspection costs to a minimum while supporting professional inspections throughout the Netherlands.

What is a NEN 1010 inspection?

A NEN 1010 inspection is an inspection of an electrical installation against the requirements that apply to low-voltage electrical installations. In practice, that means assessing whether the installation has been executed in a way that supports electrical safety.

A complete inspection is typically built around three core parts:

  1. Visual checks
  2. Measurements and testing
  3. Documentation of findings

This structure matters because safety cannot be judged from one angle alone. Some issues are visible immediately. Others only become clear when measured. And without proper documentation, even a well-executed inspection is harder to use for follow-up, maintenance, or internal accountability.

Why a NEN 1010 inspection matters

Electrical risks can affect both people and business continuity. Unsafe installations can increase the chance of faults, interruptions, and hazardous situations. That is why a structured inspection is valuable: it helps identify whether the installation appears safe, whether protective measures function as intended, and whether the condition of the installation has been recorded clearly.

A professional inspection also creates clarity for stakeholders such as facility managers, technical staff, employers, and property owners. Instead of relying on assumptions, they can work from documented findings.

For organizations already reviewing related obligations around workplace safety or periodic electrical assessments, this topic also connects naturally with NEN inspections, SCIOS inspections, and broader electrical safety management.

The three main parts of a NEN 1010 inspection

1. Visual checks

A visual inspection is the first step in many electrical assessments. The goal is simple: identify observable issues before moving into measurements and testing.

During visual checks, the inspector reviews the installation for clear signs that something may be incorrect, incomplete, damaged, or inconsistent with safe execution. This step often reveals issues that no instrument is needed to detect.

What visual checks are designed to assess

A visual review helps determine whether:

This stage is important because visible defects can already point to larger technical problems. A damaged enclosure, loose-looking component, unclear labeling, or poor finishing may indicate that deeper testing is needed or that the installation requires closer attention overall.

Why visual checks come first

Visual checks are not a formality. They help establish context for the rest of the inspection. If something looks incorrect physically, measurements alone may not give the full picture. Starting with the visible condition helps the inspector approach the next steps with better focus.

2. Measurements and testing

After the visual assessment, the next stage is measurement and testing. This is where the inspection becomes more technical. Measurements help verify whether protective measures and electrical characteristics perform as expected.

Two examples specifically associated with this inspection topic are:

These tests are important because they help move the inspection from observation to verification.

Circuit impedance

Circuit impedance testing helps assess the electrical path in a circuit and whether fault conditions can be handled in a way that supports protective disconnection. In practical terms, this type of measurement helps determine whether protection can respond effectively when a fault occurs.

Why does this matter? Because in an electrical fault situation, protection must operate fast enough and reliably enough to reduce danger. Measuring impedance helps provide insight into that behavior.

RCD testing

RCD testing checks the function of a residual current device. An RCD is a protective device intended to react when leakage current is detected. Its role is closely linked to shock protection and fault protection.

An RCD test helps verify that the device responds as intended. If this type of protection is present, it should not simply be assumed to work. It needs to be checked.

Why measurements are essential

Measurements matter because many electrical safety issues are not visible. An installation can appear neat and still have protection problems that only testing reveals. That is why a NEN 1010 inspection combines visual checks with measured results.

In summary, measurements help answer questions such as:

What documentation adds to the inspection

The final major step is documentation. This is where the results of visual checks and measurements are organized into a usable outcome.

Documentation is not just administration. It turns inspection work into a practical management tool.

What good documentation should do

Clear documentation helps an organization:

This is especially useful when multiple sites, technical teams, or external stakeholders are involved. A documented inspection creates continuity. It makes it easier to compare future inspections, plan corrective actions, and show that electrical safety has been assessed in a structured way.

Why documentation supports follow-up

An inspection only creates value when the outcome can be acted on. Good documentation helps organizations move from “an inspection took place” to “we know what the results mean and what happens next.”

That is one reason efficient inspection workflows matter. Wassenaar Inspecties emphasizes efficient working methods supported by modern equipment and software, which aligns well with the need for clear, consistent reporting.

What clients can expect from a structured inspection approach

A clear inspection approach usually follows a logical sequence. While each installation has its own context, the process commonly looks like this:

Step What happens Why it matters
1 Visual checks Detects visible defects, irregularities, or unsafe conditions
2 Measurements and testing Verifies electrical behavior and protective functions
3 Documentation Records findings clearly for review and follow-up

This structure helps clients understand that a NEN 1010 inspection is not a single test. It is a layered assessment that combines observation, verification, and reporting.

Practical takeaways: how to prepare for a NEN 1010 inspection

If you want an inspection to run smoothly and deliver useful results, preparation helps. Here are practical steps to consider.

Before the inspection

During the inspection

After the inspection

Frequently asked question

What happens during a NEN 1010 inspection?

A NEN 1010 inspection typically includes visual checks, measurements such as circuit impedance, testing such as RCD testing, and clear documentation of the findings.

That concise answer is often what decision-makers need first. The fuller explanation, of course, is that each part serves a different purpose. Visual checks identify what can be seen. Measurements verify what must be tested. Documentation makes the result usable.

Why specialist focus makes a difference

Electrical inspections benefit from repetition, focus, and efficiency. Wassenaar Inspecties states that it deals exclusively with NEN and SCIOS inspections of business equipment, is highly experienced, and works efficiently with modern equipment and software. That specialist focus is valuable because electrical safety assessments require consistency and attention to detail.

The company serves clients throughout the Netherlands from the following branches:

That regional presence supports fast availability for professional inspections.

Conclusion

A NEN 1010 inspection becomes much easier to understand when you break it down into its essential parts: visual checks, measurements, and documentation. Each step plays a distinct role. Visual checks identify what stands out immediately. Measurements such as circuit impedance and RCD testing verify safety-related performance. Documentation turns the inspection into a practical record that supports action and continuity.

For organizations that want electrical safety assessed in a clear and structured way, this process provides both technical insight and practical value. If you want to discuss a NEN 1010 inspection, request a quote, or get in touch about electrical inspections for your business, contact Wassenaar Inspecties at info@wassenaarinspecties.nl or call (076) 303 63 90.