Electrical requirements and standards can change and are installation-specific. Add dated primary-source references before expanding this page; work should be designed, installed and certified by appropriately competent people.
This is a project-planning checklist, not wiring advice. Give the electrician the current heater and control documentation, site plan and proposed cable route before buying equipment.
Information the electrician needs
Provide the heater model and rating, supply characteristics, controls, auxiliary loads, cable distance and route, sauna drawings, conditions and commissioning instructions.
Questions to resolve
Ask about supply capacity, protective devices, isolation, cable selection and routing, equipment locations, inspection, testing and certification.
Sequence the work
Coordinate ducts and penetrations before the base and landscaping are finished. Do not conceal cables or close walls before planned inspections.
Frequently asked questions
Can a garden sauna plug into a normal socket?
Do not assume so. The answer depends on the specific equipment and installation design. Have a competent electrician assess the requirements and property supply.