110v 16A Junction Splitter Box and Extension Leads – Safe, Versatile Power Distribution for Site Work

110v 16A Junction Splitter Box and Extension Leads provide a safe, robust way to distribute 110 volt power around construction sites, workshops and temporary installations. Fitted with 110v 16A industrial plugs and sockets, these splitter boxes and leads are ideal for powering site lighting, portable tools and equipment from a 110v transformer, in line with UK site safety practices and BS EN 60309.

The 110v 16A Junction Splitter Box and Extension Leads set is designed to make temporary power distribution on site safer, more organised and more flexible. Starting from a 110v transformer or 110v generator outlet, the extension leads carry power to a central splitter box fitted with multiple 16 amp 110v sockets. From there, tools, lights and other 110v equipment can be plugged in as needed.

Each extension lead is manufactured using heavy‑duty 110v site cable (typically HO7RN‑F or equivalent rubber‑sheathed cable, depending on product spec), chosen for its durability, oil and abrasion resistance, and suitability for construction and industrial environments. The yellow 110v 16A plug and connector are keyed and colour‑coded in line with BS EN 60309‑2, reducing the risk of misconnection with 230v circuits.

The junction splitter box is typically a tough, impact‑resistant enclosure fitted with several 16A 110v sockets (for example, 2‑way, 3‑way or 4‑way, depending on model). Many boxes offer an IP44 or higher ingress protection rating against splashing water and dust, making them suitable for normal outdoor site conditions when used correctly. Some units may include a carrying handle or mounting points for positioning off the ground.

This type of 110v power distribution equipment is widely used across the construction, fit‑out, maintenance, M&E, events and industrial sectors, where reduced low voltage (110v) is preferred for portable tools and lighting to mitigate electric shock risk under BS 7671 (IET Wiring Regulations) and site safety policies.

Always ensure the total load connected to the splitter box and extension leads does not exceed the rated current and the upstream supply (e.g. transformer output). For extended runs or higher loads, follow guidance on voltage drop, cable sizing and protective device rating from a competent electrician or site supervisor.

Typical Use Cases

• Distributing 110v power from a transformer to multiple power tools on building and refurbishment sites.
• Providing 110v outlets for site lighting strings, inspection lamps and task lights.
• Supplying M&E installers with multiple 110v connection points during first and second fix.
• Powering portable equipment (e.g. mixers, drills, saws, grinders) in workshops and temporary work areas.
• Use in events, staging and temporary structures where 110v reduced‑voltage distribution is specified.

Safety & Usage Tips

1. Use only with 110v systems: These products are designed for 110v AC, 16A, BS EN 60309‑2 yellow connectors. Do not attempt to adapt them to 230v domestic sockets.
2. Check supply rating: Confirm the rating of your 110v transformer or generator, and ensure the total load on the splitter and leads stays within both the 16A circuit rating and the transformer’s capacity.
3. Inspect before use: Before each shift, visually check cable sheaths, plugs, sockets and the splitter box for cuts, crushing, exposed conductors, loose covers or signs of overheating. Remove damaged items from service immediately.
4. Keep connections off the ground: Where possible, keep splitter boxes and joint connections off wet ground using stands, hooks or suitable supports to reduce moisture and mechanical damage risks.
5. Do not overload: Add up the current draw of all connected tools and equipment. Large loads such as mixers, large grinders or multiple heaters may require dedicated circuits or higher‑rated distribution boards.
6. Run cables safely: Route extension leads to avoid trip hazards, sharp edges and moving plant. Use cable ramps or protection where leads cross walkways or vehicle routes.
7. Test and inspect: Include leads and splitter boxes in your portable appliance testing (PAT) regime and site inspection schedule, in line with EAWR, BS 7671 and company procedures.

Always follow your site’s electrical safety rules, method statements and risk assessments. Installation, inspection and any modifications to site electrical systems should be carried out by a competent electrician.

110v 16A Junction Splitter Box and Extension Leads Features

• 110v 16A plug & sockets – yellow BS EN 60309‑2 industrial connectors for reduced‑voltage site systems.
• Rugged splitter box – impact‑resistant housing with multiple 110v 16A outlet sockets (e.g. 2‑way, 3‑way or 4‑way depending on model).
• Heavy‑duty flex – typically HO7RN‑F or similar tough rubber cable for demanding site conditions (verify cable type on product spec).
• IP‑rated enclosure – splitter box commonly rated to IP44 or higher for resistance to splashing water and foreign objects (check exact IP rating).
• Pre‑wired and ready to use – supplied fully assembled for immediate connection to a 110v source.
• High visibility – yellow connectors and often bright cable colours for improved on‑site visibility and safety.
• Trade‑quality components – suitable for daily construction and industrial use when maintained and used correctly.

110v 16A Junction Splitter Box and Extension Leads Technical Information

• Voltage: 110V AC (typically 55‑0‑55V centre‑tapped to earth, in line with UK site practice).
• Current rating: 16A per plug/socket circuit (overall load subject to supply and internal design – check product data).
• Connectors: 110v 16A BS EN 60309‑2 industrial plug(s) and socket(s), yellow, keyed for 110v use.
• Cable type: Commonly HO7RN‑F rubber‑sheathed flexible cable or equivalent heavy‑duty flex (see product for conductor size and core count).
• Cable length(s): Extension leads typically available in 5m, 10m, 14m or 25m lengths (check variant options).
• Splitter box outlets: Typically 2, 3 or 4 x 16A 110v socket outlets (confirm for each model).
• Ingress protection: Splitter box commonly rated to at least IP44; verify IP rating on product label or datasheet.
• Standards & compliance: Connectors to BS EN 60309‑2. Overall use to be in accordance with BS 7671 (IET Wiring Regulations), EAWR and site rules. For specific test data, refer to the manufacturer’s technical documentation.

For critical applications (e.g. long cable runs, high duty loads, safety‑critical equipment), consult a competent electrical designer or site electrician to confirm cable sizing, protective device ratings, volt drop and maximum permissible load.

Frequently Asked Questions – 110v 16A Junction Splitter Box and Extension Leads

1. Can I plug this 110v splitter box into a standard 230v socket?

No. These products are designed specifically for 110v systems using yellow BS EN 60309‑2 connectors. They must be supplied from a suitable 110v transformer, generator or 110v distribution board. Never attempt to adapt or connect them directly to 230v domestic sockets.

2. How many tools can I run from one 110v 16A splitter box?

This depends on the current draw of each tool and the rating of the supply. Add up the full‑load current or power rating of each connected tool and ensure the total does not exceed the 16A circuit rating or the transformer’s output. For example, several small hand tools may be fine together, but a combination of large mixers, saws or heaters may overload the circuit.

3. What length 110v extension lead should I use?

Use the shortest length that is practical for the task. Longer cables increase voltage drop, which can affect tool performance. For typical site tools, leads of up to 25m are common, but always follow manufacturer guidance and, on critical equipment, seek advice from a competent electrician regarding maximum lengths and cable sizes.

4. Are these suitable for outdoor use?

Most 110v site splitter boxes and extension leads are designed for outdoor construction environments and have an IP44 or similar rating. This provides protection against splashing water and solid objects >1mm. However, they should not be submerged, and you should avoid leaving connectors lying in standing water or deep mud. Always check the specific IP rating and follow site safety guidance.

5. Do I need PAT testing on 110v extension leads and splitter boxes?

Yes. Under the Electricity at Work Regulations and good practice guidance, all portable electrical equipment – including 110v extension leads and splitter boxes – should be subject to regular inspection and testing (PAT) appropriate to the site environment and risk level. Frequency should follow your company policy and risk assessment, often more frequent on harsh construction sites.

110v 16A Junction Splitter Box and Extension Leads Common Uses / How to Use

Common Uses

• Providing multiple 110v outlets for trades on a construction or refurbishment site.
• Running site lighting strings and inspection lamps from a central 110v transformer.
• Powering portable mixers, saws, drills and grinders in safe reduced‑voltage conditions.
• Temporary power for maintenance work in plant rooms, warehouses and industrial units.
• Distributing 110v power at events, exhibitions and temporary installations where 110v is specified.

How to Use – Step‑by‑Step Summary

1. Confirm supply: Ensure you have a suitable 110v transformer or 110v outlet with a matching 16A 110v socket.
2. Connect extension lead: Plug the 110v 16A plug from the extension lead into the transformer or 110v distribution board.
3. Position splitter box: Place the splitter box in a safe, accessible location, ideally raised off wet ground and away from traffic routes.
4. Plug in tools/lighting: Connect only 110v 16A tools and equipment to the splitter box sockets, checking each plug and cable is in good condition.
5. Manage cable routing: Run extension leads and flexes so they do not create trip hazards or pass under sharp edges or moving plant; use cable ramps or guards where necessary.
6. Monitor load: Be aware of how many devices are connected and avoid circuit overload. If breakers trip or fuses blow, investigate the cause rather than simply resetting.
7. End of shift: Disconnect tools, switch off or isolate the 110v supply at the transformer or board, and visually inspect leads and splitter before storage.