To enjoy your patio to the full all year round, it’s essential that your patio heater installation is safe and optimized. In this article, we’ll help you understand the electrical specifications required to plan your installation and ensure that it complies with current standards.

Although this article provides an overview, the installation of a heating system must be carried out by a qualified electrician. He or she will ensure that the installation complies with the Canadian Electrical Code and guarantees optimal, safe operation.

Calculate the number of amperes required for a patio heater

Use the following formula:
Amperes = Power (W) / Voltage (V)

For example:
A 3000W patio heater operating at 240V: 3000 ÷ 240 = 12.5 A

Calculate the safety margin for the circuit

To determine the amperage of the circuit and circuit-breaker, a safety margin is normally added to allow for load variations.

For example, for a 12.5A load, calculating a 125% margin gives a 20A circuit when rounded up.

What size wire should I use?

Recommended wire gauges are :

• Rating 12: For a 20A circuit
• Rating 10: For a 30A circuit

240V power and amperage table

Note:

• AWG (American Wire Gauge): The lower the number, the larger the wire diameter.
• It is also recommended to increase the wire size if the circuit length exceeds 100 feet (30 meters) to avoid voltage drop.

Specific considerations for outdoor heating

• Weatherproof: Use cables rated for outdoor use or higher for protection against water and dust.
• Connection : Ensure that the electrical panel has the necessary capacity to accommodate the device.

Additional tips

1. Safety rules: All circuits must be installed in compliance with Canadian Electrical Code (CEC) standards.
2. Recommended professional: Although this article provides guidelines, make sure the installation is carried out by a certified electrician.

What makes Technirep the ideal partner?

Since 1997, we’ve been offering recognized expertise in radiant heating in Quebec. Our experts :

Provide a turnkey service: from assessment to installation.

Work with certified electricians.

Design a customized outreach plan for each project.

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Do you have a heated terrace project in mind? Contact us today for a free evaluation. Our experts will guide you every step of the way to choosing the system that’s right for you.

Warning: This article is provided for information purposes only. All electrical appliances must be installed by a certified electrician in accordance with the Canadian Electrical Code and local standards. This ensures safe installation and compliance with regulatory requirements.