Generator rental for construction sites

Sizing for concurrent trades, not the tool list

Nobody runs every tool at once. Size for the realistic worst case — the trades that overlap — then add the starting surge of the largest motor, which is usually a compressor, hoist or pump.

Sites that add HVAC or a crane part-way through the programme should size for that phase up front rather than swapping equipment mid-job.

Access, placement and ground

A towable genset needs a route in, a firm place to sit and clearance for airflow and exhaust. Confirm gate widths, overhead clearances and whether the ground stays firm after rain.

Keep the fuel truck's route in mind. A unit tucked behind a completed slab is a problem in week three.

Distribution and phase

Confirm voltage and phase against the tools and temporary panels on site. Cable, spider boxes and transformers are separate items and are the most commonly forgotten part of a quote.

Ask who supplies grounding rods and who is responsible for the connection itself — that work usually belongs to a licensed electrician.

Before you book

• Concurrent load list with the largest motor identified
• Voltage, phase and connection type on site
• Gate width, ground conditions and placement
• Fuel policy and refuelling schedule
• Noise limits and permitted working hours
• Who performs the electrical connection

Questions people ask

Equipment that usually fits

• Towable diesel generators — 20 - 150 kW
• Portable generators — 2 - 15 kW
• Work out the kW you need
• Understand the cost structure