How to Safely Install Electrical in Your Garden Shed
Key Highlights
✔ Enhance the functionality of your shed with a safe and efficient electrical installation.
✔ Plan ahead: Determine power needs, local code requirements, and installation method (DIY or professional).
✔ Essential tools include armoured cable, conduit, GFCI outlets, and proper wiring techniques.
✔ Follow a step-by-step installation guide, including planning, digging, laying cables, and testing.
✔ Portable Buildings of Alberta can professionally install electrical in your purchased shed for a worry-free setup.
Introduction
Adding electricity to your garden shed can transform it into a functional workspace, hobby area, or storage space with lighting and power access. Whether you’re installing outlets for tools, lighting for visibility, or heating for year-round use, proper electrical installation is crucial for safety and efficiency.
This guide will walk you through the DIY process, including planning, wiring options, safety requirements, and installation steps. However, if you want to ensure everything is installed correctly and meets Canadian electrical codes, Portable Buildings of Alberta offers professional electrical installation services for their purchased sheds.
Step 1: Plan Your Shed’s Electrical System
Assess Your Power Needs
Before installing electricity, consider:
🔹 What will you power? (Lights, tools, heaters, charging stations)
🔹 How much power do you need? (Add up the wattage of all devices)
🔹 Will multiple devices run at the same time? (Prevent overloading)
🔹 Do you need room for future expansion? (More outlets or electrical circuits later)
Having a clear plan helps determine the right wiring, breaker size, and number of outlets for your shed.
DIY vs. Hiring a Professional
Deciding between DIY installation and hiring an electrician depends on your experience with electrical work:
✅ DIY Installation may be an option for those familiar with electrical wiring, Canadian codes, and safety considerations and procedures.
⚠ Hiring a Professional is recommended if you’re unsure about permits, grounding, wiring, or circuit loads.
💡 Portable Buildings of Alberta can professionally install electricity in your purchased shed, ensuring it meets Canadian Electrical Code standards. Contact us today!
Step 2: Understand Canadian Electrical Codes & Permits
Before starting, research Canadian electrical codes and local permit requirements:
✔ Permit Required? Most Canadian municipalities require a permit for shed electrical installation.
✔ Electrical Code Compliance: The Canadian Electrical Code (CEC) regulates outdoor wiring for safety and compliance.
✔ Weatherproof Components: Outdoor electrical setups require weatherproof wiring, GFCIs, and conduit protection.
Tip: Hiring a qualified electrician ensures compliance with local codes, permits, and inspections.
For more information on Calgary By Laws, visit our blog: A Guide to Backyard Sheds and City of Calgary By-Laws
Step 3: Gather Tools & Materials
Having the right materials ensures a safe and durable installation.
| Tool/Material | Purpose |
|---|---|
| Armoured Cable (BX Cable) | Main power line from house to shed |
| Conduit (PVC or Metal) | Protects wiring from damage & moisture |
| GFCI Outlets | Prevents shock hazards in wet conditions |
| Electrical Box | Houses connections & circuits |
| Wire Connectors & Tape | Secure wiring connections |
| Trenching Tool | Digging for underground wiring |
💡 Choosing the Right Wiring: BX (armoured) electrical cable or weatherproof conduit ensures durability in outdoor conditions.
Step 4: Step-by-Step Installation Guide – Electricity to a Shed
1. Plan Your Electrical Layout & Get Permits
- Decide electrical outlets & light locations in your shed.
- Contact local authorities to determine permit & inspection requirements.
2. Call Before You Dig
- Contact your local utility service to mark underground cables or pipes before digging.
- This ensures you don’t damage gas or electrical lines.
3. Dig a Trench for Underground Wiring
- Depth: 18-24 inches for underground conduit.
- Use sand or gravel at the bottom for drainage & protection.
4. Install Conduit & Run Wiring
- Lay armoured BX cable or conduit-protected wiring in the trench.
- Run wiring from the main panel to your shed’s electrical box.
5. Connect Wiring to Main Electrical Panel
- Turn off power at the main panel before making connections.
- Run a new circuit breaker for the shed’s power supply.
- Connect ground wire properly to prevent electrical faults.
6. Install Outlets, Switches & Lighting
- Use GFCI outlets for shock protection in wet areas.
- Install LED lighting for energy efficiency.
- Ensure outdoor-rated outlets and switches are used.
7. Test & Inspect Your Electrical Setup
- Before turning power on, check all connections for safety.
- If unsure, have a licensed electrician inspect the work.
Common FAQs About Shed Electrical Installation
1. Do I Need a Permit to Install Electricity in My Shed?
✔ Yes, in most cases. Local building codes require permits and inspections for outdoor electrical work. Whether you’re running power for light fittings, power tools, or outlets, you should check with your local authorities before starting.
2. Can I Run an Extension Cord Instead of Installing Permanent Wiring?
⚠ No! While an extension cord might seem like an easy solution, it’s not a safe or legal long-term option. A properly installed power supply using steel wire armoured cable (SWA) or conduit-protected wiring ensures safety and compliance with electrical codes.
3. How Do I Protect Outdoor Wiring from Weather Damage?
Use steel wire armoured cable (SWA) or PVC/metal conduit to protect wiring from moisture, rodents, and accidental damage. Additionally, installing a junction box at key connection points ensures secure and weatherproof connections.
4. What Is a GFCI Outlet & Why Do I Need One?
A Ground Fault Circuit Interrupter (GFCI) automatically shuts off power if an electrical fault occurs, preventing shocks in damp conditions. It’s required for shed outlets.
5. Can I Power My Shed with Solar Energy Instead?
✔ Yes! If you prefer an off-grid solution, solar power can be a great alternative. A solar panel system with a battery storage unit can run LED bulbs, light fittings, and small power points, but may not be suitable for high-powered tools without an advanced setup.
6.How Do I Connect My Shed to My Home’s Existing Electrical System?
You can connect your shed to an existing circuit in your home by running a dedicated steel wire armoured cable (SWA) or conduit wiring from your main panel to the shed’s electrical box. A qualified electrician can determine whether your home’s system can handle the extra load.
7. How Much Does It Cost to Install Electricity in a Shed?
💰 Costs vary based on:
- DIY vs. professional installation
- Distance from house to shed
- Number of outlets & lighting fixtures
💡 For an accurate quote, Portable Buildings of Alberta can assess your needs and provide installation services for your purchased shed! Contact us today!
