Complete guide · 2026

Home electrical wiring diagram:
complete guide 2026

Understand the different types of home electrical wiring diagrams — single-line, multi-wire, and floor plan layouts — and learn how to create yours without expensive CAD software.

Reading time: 7 min·Updated: May 2026

The 4 types of electrical diagrams

Single-line diagram (unifilaire)

Simplified representation where each circuit is shown as a single line. Used for the circuit breaker panel overview and for CONSUEL certification.

Use: Panel overview, permits, CONSUEL

Multi-wire diagram (multifilaire)

Detailed representation showing each conductor separately (live, neutral, earth). Used by electricians for precise wiring.

Use: Detailed wiring, technical verification

Electrical floor plan (plan sur PDF)

Placement of electrical symbols directly on the architectural floor plan. Ideal for communicating with electricians and getting accurate quotes.

Use: Quotes, contractor communication, permit applications

Wiring connection diagram

Shows the physical cable routing between equipment. Essential for smart home systems and complex circuits.

Use: Smart home, complex circuits, commissioning

Electrical floor plan vs. wiring diagram

Criterion	Electrical floor plan	Wiring diagram
Level of detail	Symbol placement on floor layout	Connections & wiring routes
Primary use	Contractor quotes, client communication	CONSUEL, technical verification
Accessibility	Anyone can read it	Trained electricians
Required tool	Planelico (free, online)	AutoCAD, EPLAN, SEE Electrical

FAQ — Home electrical wiring diagram

What is the difference between an electrical plan and a wiring diagram?

An electrical floor plan shows where each electrical component is physically located on the floor plan (top-down view). A wiring diagram (schéma électrique) shows how components are logically connected and how the wiring runs between them. For most homeowners and electricians, an electrical floor plan with wiring connections is sufficient — a full technical wiring diagram is only required for CONSUEL.

Do I need a wiring diagram for a home renovation?

For partial renovations, an electrical floor plan with symbol placement is generally sufficient for your electrician. For a complete rewiring or new construction, a single-line diagram (unifilaire) of the circuit breaker panel is required for CONSUEL certification.

What software is used to create electrical wiring diagrams?

Professional electrical engineers use dedicated CAD software like AutoCAD Electrical, EPLAN Electric P8, or SEE Electrical, costing €200-2,000/year. For homeowners and most electricians, Planelico is a free browser-based alternative that handles the electrical floor plan layer — without the steep learning curve.

Can I create an electrical wiring diagram without AutoCAD?

Yes. Planelico lets you create a complete electrical floor plan with symbol placement, wiring connections between switches and lights, colored room zones, and professional PDF export — all in a browser, for free. For detailed single-line diagrams (unifilaire) required for CONSUEL, your electrician will typically produce these as part of the installation.

Related guides

How to create a house electrical plan

Step-by-step guide, NF C 15-100 compliance.

NF C 15-100 standard explained

Required circuits, minimum outlets, switchboard.

The 64 standard electrical symbols

All NF C 15-100 symbols explained.

Create your electrical plan now

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