Key points
- Electrical Installation Guide: a dedicated circuit for each large appliance such as the washer, dishwasher and cooker, and fixed heaters connect to fixed terminals, not a plug.
- Appliances near water (kitchen, laundry) need RCD protection per the code.
- Water appliances need their own valve and a trapped drain; dryers and hoods need venting outside depending on type.
- Compare the energy label of the specific model if the product is on the regulation's list, and keep the invoice and warranty card (at least two years for electrical appliances).
Written for:OwnerContractor
Large appliances are usually bought after construction, but whether they install well is decided before that: is there a suitable socket and circuit? Water and drainage? A vent outlet? Room for maintenance? This guide is organised by appliance and location.
1) Electricity
- A dedicated circuit for each large appliance such as the washer, dishwasher and cooker, and fixed heaters connect to fixed terminals, not a plug1. See wires and sizes.
- Kitchen and laundry appliances are near water; protecting sockets with an RCD of no more than 30 mA is required by the international standard2, and the binding reference is SBC 4013. See breakers and RCDs.
- Do not run a large appliance from an extension lead or multi-plug (practical advice). See electrical problems.
2) By appliance
| Appliance | Needs | Watch out (practical advice) |
|---|---|---|
| Washing machine | Dedicated circuit1, water valve, trapped drain | A level floor that takes vibration, and a nearby floor drain if possible |
| Dishwasher | Dedicated circuit1, water and drain under the sink | Leave access to the valve without removing the unit |
| Cooker and oven | Dedicated circuit1 or gas depending on type | Gas piping is specialist work; do not put the hob under a window with nearby curtains |
| Dryer | Power per its rating, and an outside vent if it is a vented type | Clean the lint filter after each use per the maker's instructions |
| Fridge | A nearby dedicated socket and ventilation around it | Leave the clearance the maker specifies behind and above |
| Kitchen hood | An outside vent (for ducted types) | Clean grease filters regularly |
3) Water and humidity
- A dedicated valve for each water appliance lets it be repaired without shutting off the house. See basins and toilets.
- Draining through a trap prevents odours4.
- Waterproofing the laundry floor and a floor drain limit damage from any leak. See waterproofing under tiles.
- Moisture from cooking and drying is removed by extract fans; suitable indoor humidity is below 60%5. See indoor air.
4) Before buying
- Energy label: if the product is on the list in the General Technical Regulation for Energy Efficiency, it must carry the label; compare it for the specific model6.
- Dimensions with ventilation clearances, and the route to bring the unit in (doors and stairs).
- Connection type: plug or fixed, and the appliance power in watts. Estimate use with the electricity calculator.
- Warranty: at least two years for electrical appliances, extended by any delay in spare parts or repairs7. See warranties.
- After-sales service and spare parts availability in your city.
We do not favour one brand over another; the decision rests on the model's efficiency label, the warranty and the service available to you.
Sources
The number next to a statement points to its source in this list. Sources back the general information; anything marked “practical advice” is editorial experience, not a quoted source. Anything that affects safety, structural design or electrical installations needs a licensed professional, and in Saudi Arabia the binding reference is the Saudi Building Code.
- 1Residential electrical installation — Circuits — Electrical Installation Guide (Schneider Electric)
- 2IEC 60364-4-41 — Protection against electric shock — IEC — copy published via iTeh Standards
- 3Saudi Electrical Code SBC 401 — code requirements (based on IEC 60364 with local amendments) — Saudi Building Code National Committee
- 4What's That Smell? Understanding Sewer Odors and P-Traps — South Davis Sewer District
- 5A Brief Guide to Mold, Moisture and Your Home — U.S. Environmental Protection Agency (EPA)
- 6General Technical Regulation for Energy Efficiency (Amendment 3, 2023) — Annex 1 product list incl. water heaters, SASO 2884 — Saudi Standards, Metrology and Quality Organization (SASO)
- 7Ministry of Commerce explains consumer rights and duties in electrical appliance warranties — Ministry of Commerce (Saudi Arabia)
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This guide is for general information and planning, based on standards and technical guides. Standards are revised periodically; in Saudi Arabia the binding reference is the Saudi Building Code and the instructions of the competent authorities. For design and execution, use a licensed engineer or technician. Found an error? Tell us.