Check the total load, not just the spare sockets
A desk may contain a computer, screens, chargers, lamps and other equipment with different demands. List what operates together and check the extension product’s marked rating and instructions. Empty spaces on a multiway lead do not establish spare capacity.
Do not connect extension leads to one another to keep adding outlets. Cable reels need to be used in accordance with their instructions, including unwinding requirements. Damaged or overheating equipment should be taken out of use rather than hidden under a desk.
Keep cables clear of chairs, doors and furniture
Keep cables clear of chairs, doors and furniture
Cables across a doorway, under furniture or in a position where chairs repeatedly damage them create practical problems. Power supplies and plugs also need space for safe ordinary use, rather than being crushed into a narrow gap behind a cabinet.
The brief for fixed outlets should show the desk, monitor positions, storage and normal cable route. A socket on the wrong side of the room can leave the same trailing-lead problem even after new electrical work.
Include heaters and other high-demand equipment
Include heaters and other high-demand equipment
Space heating or other high-demand equipment changes the office setup. Do not assume that a charging arrangement suitable for a laptop also suits every additional appliance. Follow the equipment instructions and describe what you intend to use.
For employer-provided equipment, check your employer’s electrical safety and home-working arrangements too. A home installation and workplace equipment can have different responsible parties, even when they meet at the same desk.
Plan fixed sockets around the desk
Plan fixed sockets around the desk
Extra outlets may improve convenience, but they do not create additional circuit capacity. The existing installation and intended equipment still need assessment. Explain whether the room is permanent, shared with another use or likely to change.
Discuss accessory positions, USB requirements, cable access and making good before decorating. A clear point list and equipment list give Max a much more useful starting point than asking for an arbitrary number of double sockets.
What to share with your enquiry
- Desk and furniture layout
- Equipment used at the same time
- Current extension-lead arrangement
- Any heating or other significant loads
- New socket and charging preferences
Questions answered
Can I plug one extension into another?
Do not daisy-chain extension leads to create more outlets. Use equipment within its rating and instructions, and plan suitable fixed provision for a permanent need.
Ask Max about thisHow many sockets do I need at a home-office desk?
Count the computer, monitors, lamps, chargers and other equipment that may run together, then plan accessible outlets around the desk. The circuit still needs to support the intended load; adding outlets improves convenience but does not create more capacity.
Ask Max about thisCan I charge a laptop from any USB wall socket?
No. Check the device, cable, output and charging protocol against the exact socket specification.
Ask Max about thisCan I plug a portable heater into my office extension lead?
Avoid powering a portable heater from an extension lead; Electrical Safety First advises against it because leads can be overloaded. Follow the heater's instructions and use a suitable wall socket. If your workspace lacks a practical supply, discuss extra fixed provision rather than adding adaptors.
Ask Max about thisIs it safe to run an extension lead under a rug?
Avoid concealed or trapped leads that can be damaged or overheat. Keep cables protected and clear of walking routes, furniture and chair movement. Where the desk is too far from usable sockets, plan better fixed positions rather than hiding a stretched lead.
Ask Max about thisSources and further reading
Read the original guidance relevant to this question. Building Regulations and rental-law references here relate to England.