Temporary Builders Supply: A Complete NSW Guide

What a Temporary Builders Supply Actually Is

A temporary builders supply (often shortened to 'builders pole', 'builders temp' or 'construction supply') is a purpose-built, portable or semi-permanent connection point that provides mains power to a construction site. It typically consists of a treated timber or galvanised steel pole or a freestanding frame, a weatherproof enclosure housing the main switch, residual current devices (RCDs) and circuit breakers, an electricity meter, and outlets rated for site use.

Because the supply connects directly to the distribution network — Ausgrid, Endeavour Energy or Essential Energy depending on your location — only a licensed Level 2 ASP can make the physical connection and energise it. A standard Level 1 electrician can wire and test the outlets on the load side, but the network connection itself is exclusively Level 2 work.

The supply is deliberately temporary. It is designed to be safely energised for the duration of construction, then disconnected and removed (or transitioned to the permanent supply) once the building's own switchboard and consumer mains are ready to take over.

Overhead or Underground: Choosing the Connection

Your site can be fed either overhead or underground, and the choice usually comes down to what infrastructure already exists in the street and the network's rules for your area. An overhead builders supply uses a service line running from the network pole to an attachment point on your builders pole — quick to install where poles already line the street.

An underground builders supply draws from a pillar box, a network pit or an existing underground main, running conductors in conduit up into the enclosure. This is common in newer estates and areas that have been undergrounded. If your permanent supply will ultimately be underground, it often makes sense to plan the temporary supply around the same trenching and conduit route to save on later works.

The NSW Service and Installation Rules set out clearance heights, attachment requirements and conductor sizing for both methods. A Level 2 ASP will confirm which method your distributor will accept for your specific address before quoting.

Safety Requirements on a Construction Site

Construction sites are harsh electrical environments — water, dust, mechanical damage and constant plugging and unplugging all increase the risk of a fault reaching a worker. For that reason, temporary supplies carry stricter protection requirements than a finished home.

All final subcircuits supplying socket outlets must be protected by RCDs (safety switches) with a rated tripping current of 30 mA or less, and the installation must comply with AS/NZS 3012, the standard covering electrical installations on construction and demolition sites. Enclosures must be weatherproof to the appropriate IP rating, the pole must be mechanically stable, and the whole assembly must be positioned clear of vehicle movement and excavation.

SafeWork NSW also expects the supply to be inspected and tested at regular intervals throughout the project. A well-built builders temp makes those inspections straightforward and keeps the site running without electrical stoppages.

How the Connection Process Works

The process starts with a site assessment to confirm the connection method, the metering arrangement and the position of the pole. Your Level 2 ASP lodges the connection application and metering request with your electricity retailer and distributor, arranges for a meter to be provisioned, then builds and installs the supply.

Once the assembly is complete and tested, the ASP physically connects it to the network and energises it. Because Sydney Power Group is accredited across all three NSW network zones, we can handle the whole job — from application to live power — without waiting on a subcontractor for the network-side connection. Our on-site within 60 minutes response also means that if a builders supply faults mid-project, we can be there fast.

Removing or Transitioning the Supply

When the building nears completion, the temporary supply is either removed or the site transitions to its permanent connection. This usually involves a coordinated disconnection and reconnection: the temporary supply is de-energised and removed, and the permanent consumer mains and switchboard are energised in its place.

Planning this transition early avoids a gap in power at the point where you most need it — for final fit-off, testing and handover. A Level 2 ASP will sequence the works so the site is never left without a compliant supply.