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Construction & Site Power

Choose leads and protected distribution for suitable site facilities, lighting and equipment. Match the supply before choosing your connection.

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Building under construction with scaffolding

Leads for site equipment

110V Arctic, SY braided and H07RN-F leads, alongside selected 230V single-phase and 415V three-phase leads. Match the lead to your supply and equipment.

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  • Confirm the site voltage and equipment rating.
  • Choose conductor size and length for the load.

110V leads require a suitable 110V supply and matching 110V equipment. Keep 110V, 230V and 415V connections separate; these leads do not convert voltage.

Protected supply adaptors

MCB boxes for connecting suitable lower-current equipment or taking a single-phase output from a five-pin supply.

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  • Read the connection from supply → equipment.
  • An adaptor does not increase the power available.

Power several items on site

Choose a single-phase or three-phase box with the right input and the outputs your equipment needs.

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  • Match the box input to your supply.
  • The combined load must stay within the input rating.

MCBs provide overcurrent protection. Check the required RCD protection separately; an MCB-only box does not provide that protection.

Buying help

A few checks before you buy

Start with the supply connection, the equipment plug and the cable length.

Read the full buying guide
How do I choose the right connection?

Check the supply socket and the equipment inlet: voltage, amperage and pin count must match the chosen lead or adaptor. Yellow connections are typically 110V; blue connections are typically 230V single phase; red connections are typically 400/415V three phase. Send us a photo of both connections if you are unsure.

Why choose H07RN-F?

H07RN-F is a flexible heavy-duty rubber cable with resistance to abrasion, weather and oil. It is a practical option for frequent handling and repeated outdoor use. Cable type does not increase the capacity of your supply; the conductor size and lead length must suit the load.

Which lead length should I choose?

Measure the planned cable route and choose a suitable continuous lead. Longer runs can require a larger conductor size because of voltage drop. Check the load and the cable specification before ordering; the voltage-drop calculator and our team can help.