Blog

Tips, guides and news about electrical documentation and AREI regulations

Guide

Bill of materials for an electrical installation: which items belong on it?

Seven item groups, how they derive from the single-line diagram and the position plan, the items that are routinely forgotten — earthing material, boxes, cable allowance, spare ways — and where the AREI fixes a quantity and where it does not.

31 August 2026 13 min
Guide

Cable Routes and Lengths: How Do You Determine a Cable Length on an Electrical Plan?

The straight line is systematically too short. Installation zones under 5.2.9.10, installation method and route, splitting at junction boxes, allowances as trade practice, and when the AREI/RGIE requires the length on the diagram.

31 August 2026 12 min
Guide

Installation methods under the AREI: which entry belongs on the single-line diagram?

The seventeen installation methods of sub-section 5.2.2.1, their specific rules in section 5.2.9, how they govern current-carrying capacity and where the entry is actually mandatory — with the AREI article next to every statement.

31 August 2026 12 min
Guide

Electrical planning across several floors: does every storey need its own board?

When a sub-distribution board per floor earns its place, how to size and protect the riser, what the AREI/RGIE actually says about selectivity, and how storeys appear on the position plan and the single-line diagram — with the article reference beside every statement.

31 August 2026 14 min
Guide

Two-Way, Intermediate or Double Switch: Which One Belongs on the Single-Line Diagram?

The number of control points decides the wiring arrangement. Symbols from Table 2.23, conductors per variant, referencing on the situation plan and the boundary with home automation — with the AREI/RGIE article beside each statement.

31 August 2026 11 min
Guide

AREI Electrical Symbols: A Guide for Both Domestic Diagrams

How AREI Table 2.23 symbols work, when a defined legend may fill a gap, and which technical data must accompany symbols on Belgian domestic electrical plans.

29 August 2026 9 min
Tutorial

Heat Pump on a Single-Line Diagram: Showing the Circuit and Equipment Correctly

Document the outdoor unit, indoor unit, backup heater, protection, cable and manufacturer data of a heat pump under AREI Book 1 V06.

29 August 2026 10 min
Tutorial

Single-Line Diagram for a New Build: A Reliable AREI Checklist

From supply and protective devices to cable data, references and the matching position plan: a complete domestic new-build checklist under AREI Book 1 V06.

29 August 2026 11 min
Tutorial

Combining Solar PV and an EV Charger on a Single-Line Diagram

Show the PV inverter, EV charger, separate circuits, protection, energy metering and possible reverse power flow correctly on one diagram.

29 August 2026 11 min
Tutorial

Drawing Solar PV on a Situation Plan: Modules, Inverter and Cable Routes

Locate PV modules, inverter, fixed isolators, distribution boards and cable routes on the situation plan using the same references as the single-line diagram.

29 August 2026 10 min
Guide

Single-Line Diagram vs. Position Plan: Difference and Coordination

A single-line diagram shows electrical structure; a position plan locates equipment. Shared circuit references make the two Belgian domestic records work together.

29 August 2026 9 min
Guide

Synergrid C10/26 list: is my inverter on the list – and what if it is not?

What the Synergrid C10/26 list is, why grid operators and inspection bodies require it, how to read reference, firmware, Smax and restrictions correctly – and how to check a device in seconds.

26 August 2026 7 min
Comparison

PlanElec as an alternative to Trikker: a comparison

A factual comparison of PlanElec and Trikker: platform, price, working method and AREI support — including the cases where Trikker remains the better choice.

22 August 2026 8 min
Guide

Voltage Drop Calculation: How Long Can Your Cable Be?

Calculate the voltage drop of your cable and see when a larger cross-section is needed. Free tool for Belgium, no sign-up required.

2 August 2026 7 min
Guide

Single-phase or three-phase? Belgian networks and building connections

1×230 V, 3×230 V or 3N~400/230 V: understand the street network, neutral conductor and connection phase count in Belgium.

27 July 2026 12 min
Guide

Renovation and AREI: When Do You Need New Electrical Plans?

Not every renovation needs the same records. Learn how to distinguish substantial changes, existing parts, updated plans and inspection scope.

20 July 2026 12 min
Guide

What Can You Do with PlanElec? From Floor Plan to Working Dossier

A practical overview of PlanElec: draw the situation plan, structure circuits and cables, plan the distribution board, run an AREI/RGIE self-check, and export project documents.

20 July 2026 8 min
FAQ

Dedicated Circuit Required: Which Appliances Need Their Own Breaker?

Cooker, washing machine, dryer — the AREI requires a dedicated circuit for certain appliances. Here's the complete list.

13 July 2026 3 min
Guide

Getting Started with PlanElec: From Floor Plan to First Export

A step-by-step PlanElec guide: create a project, draw the floor plan and rooms, place devices, review automatic planning, and export documents.

7 July 2026 12 min
FAQ

Surge Protection Under AREI — What You Need to Know

The AREI requires general surge protection (Art. 4.5.1) without mandating a specific SPD type. Learn what the AREI actually regulates.

6 July 2026 3 min
Guide

Electrical Dossier for a Property Sale in 2026: Rules and Records

When does Belgium’s special sale inspection apply, what belongs in the AREI dossier, and when does the 18-month deadline run? A precise Book 1 V06 guide.

29 June 2026 10 min
Guide

10 Important AREI Inspection Points: Identify, Avoid and Correct Them

Ten recurring checks for Belgian domestic installations, explained without an unsupported ranking, failure rate or cost promise.

20 June 2026 8 min
Guide

Electrical Inspection Failed — What Now? Step-by-Step Guide After a Negative Inspection

Your electrical inspection came back negative? Learn how to read the report, identify the applicable deadline, plan safe corrections and prepare the next inspection.

16 June 2026 6 min
FAQ

Smart Home and AREI: What You Need to Know About Home Automation

Does a Smart Home installation need to be AREI-compliant? Yes — the underlying electrical installation must meet regulations. Here's what's allowed and what to watch out for.

9 June 2026 3 min
Guide

Home Battery and AREI: Correctly Integrating Battery Storage into Your Electrical Installation

How is a home battery installed according to AREI regulations? This guide explains the requirements for dedicated circuits, disconnect switches, single-line diagrams and grid operator registration.

2 June 2026 11 min
FAQ

Smoke Detectors Mandatory in Belgium: What Applies in Flanders, Wallonia and Brussels?

Are smoke detectors mandatory in Belgium? Yes — but the rules differ by region. Here's what applies in Flanders, Wallonia and Brussels.

28 May 2026 3 min
Guide

EV Charger Installation According to AREI: The Complete Guide for Belgium

AREI/RGIE requirements for EV chargers in Belgium: dedicated circuits, RCD and DC residual-current protection, cable design, documentation and grid questions.

25 May 2026 8 min
Comparison

Cost Comparison: Drawing Your Single-Line Diagram Yourself vs. Hiring an Electrician

How to compare self-documentation and a professional commission for a Belgian single-line diagram without unsupported market prices or savings promises.

19 May 2026 6 min
Comparison

PlanElec vs. Excel & Paper: Why Digital Single-Line Diagrams Are Better

Comparison between PlanElec and creating single-line diagrams with Excel or on paper. Why hand-drawn plans fail at inspection and why digital tools save time and money.

5 May 2026 5 min
Guide

PV System Diagram: Documentation and AREI/RGIE Requirements for Solar Installations

Complete guide to documenting a PV system in the single-line diagram. Protection devices, grid operator registration, battery integration, and AREI Art. 7.112.

21 April 2026 9 min
Guide

Old Buildings and AREI Part 8: Special Rules for Existing Installations

What applies to older electrical installations in Belgium. AREI Part 8 explained: permitted deviations, periodic inspection, and tips for gradual modernisation.

14 April 2026 8 min
Guide

Distribution Board Planning: Layout and Sizing According to AREI/RGIE

Complete guide to planning a distribution board. DIN rail, protection devices, row allocation, and example layout for a single-family home.

7 April 2026 12 min
Guide

Draw a Situation Plan: Step-by-Step Guide According to AREI/RGIE

Complete guide to a reviewable situation plan: from floor-plan preparation through AREI/RGIE symbols and circuit references to professional review.

30 March 2026 12 min
FAQ

Preflex vs. Open Wiring: Which Cable Method for Your Project?

Comparison of Preflex conduit systems and open cable installation in Belgium. Advantages, disadvantages, and AREI/RGIE fire safety classes at a glance.

27 March 2026 3 min
FAQ

RCD Type A vs. Type B in 2026: Which Protection Do You Need?

RCD types for Belgian domestic installations under AREI/RGIE Book 1 Version 06: Type A, Type B, DC detection, immunity and selectivity.

25 March 2026 8 min
FAQ

Main Switch Mandatory: What Does the AREI Require?

Why a main switch is mandatory in Belgium and what requirements AREI Art. 5.3.5.1b imposes.

23 March 2026 4 min
FAQ

TT or TN-S Earthing in 2026: Protection Under AREI V06

A precise comparison of TT and TN-S: fault-current paths, automatic disconnection, local electrodes and the 30/100-ohm rules for domestic AC installations under AREI Book 1 V06.

20 March 2026 8 min
FAQ

Cable Cross-Section per Circuit Breaker: Which Cable for Which Protection?

Read AREI Book 1 V06 Table 4.11 correctly: its legal ceiling is not a complete cable calculation. See Table 5.1, old EMCB and EMCVB wiring, and voltage drop.

18 March 2026 8 min
FAQ

XVB vs. VOB Cable: Which Is Right for Your Installation?

Comparison between XVB sheathed cable and VOB single-core wire for Belgian electrical installations according to AREI/RGIE standards.

16 March 2026 4 min
FAQ

What Does the Inspector Check During an Electrical Inspection?

Documentation, visual inspection, measurements — learn point by point what the inspector actually checks and measures during an electrical inspection in Belgium.

13 March 2026 4 min
FAQ

How Many Sockets Per Circuit? (AREI Limits)

Maximum 8 points per circuit — but how do you count correctly? Learn the AREI rules for sockets, lighting, and dedicated circuits.

11 March 2026 3 min
FAQ

Which Cables Can I Use in the Bathroom? (AREI Zones)

XVB is always permitted, VOB in conduit only with restrictions. Learn which cable types are allowed in each AREI zone and what to watch out for.

9 March 2026 4 min
FAQ

What Is a Situation Plan?

A situation plan shows where all electrical components are physically installed in your building. Learn what it must include and how it differs from a single-line diagram.

6 March 2026 3 min
FAQ

A 30 mA RCD per Socket? What AREI Book 1 V06 Says (2026)

A 30 mA RCD is not required per socket or automatically per circuit. Learn what AREI Book 1 V06 says for new and existing domestic installations in Belgium.

4 March 2026 7 min
Guide

How Much Does an Electrical Plan Cost? Price Comparison 2026

Which services determine the price of a Belgian electrical plan and how to compare quotations with a transparent, editable calculation model.

19 February 2026 11 min
Guide

Electrical Inspection in Belgium: The Complete Guide 2026

Everything you need to know about the electrical inspection — from preparation to the final check.

8 January 2026 8 min
Tutorial

Creating a Single-Line Diagram — Step by Step

Learn how to prepare a reviewable single-line diagram with circuits, conductor data, protective devices and unambiguous references.

5 January 2026 14 min
News

AREI/RGIE Regulations 2026: The Key Changes

What actually changed in the Belgian AREI/RGIE on 1 April 2026, and how to assess the consequences for design, documentation and inspection.

2 January 2026 11 min
More articles coming soon

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