Generator lifting moves a heavy, awkward load that can crush people or damage the set. Most accidents come from a wrong weight, a bad slinging point or a crane standing on soft ground. A written lift plan and the right gear turn a risky move into a routine job.
Quick Answer
Weigh the set or read the nameplate before choosing a crane.
Use only the lifting points marked by the manufacturer.
Keep everyone outside a radius equal to the load height plus 2 metres.
Crane capacity drops sharply as the boom radius increases.
A written lift plan and a trained banksman are not optional.
What is generator lifting?
Generator lifting refers to the planned use of cranes, hoists and rigging gear to raise and move a generator set safely.
It means matching the load weight and centre of gravity to certified gear and a competent operator.
generator lifting in practice
Typical set weights and the lifting method that suits them:
| Generator size | Approximate weight | Typical method |
|---|---|---|
| 10 kVA portable | 150 kg | Pallet truck or two-person lift |
| 60 kVA canopy | 1,200 kg | Forklift or small crane |
| 100 kVA canopy | 2,000 kg | Mobile crane, 10 tonne class |
| 250 kVA canopy | 4,500 kg | Mobile crane, 25 tonne class |
| 500 kVA canopy | 8,000 kg | Mobile crane, 50 tonne class |
| 800 kVA open set | 12,000 kg | Crawler crane or heavy recovery unit |
What does a generator lift cost in Nigeria?
A 10 tonne mobile crane costs about 250,000 to 400,000 naira per day in Lagos.
A 25 tonne crane runs about 450,000 to 700,000 naira per day.
A 50 tonne crane with a rigging crew costs 900,000 to 1,400,000 naira per day.
Certified slings and shackles cost 80,000 to 250,000 naira for a typical set.
A lift plan and competent person add 100,000 to 200,000 naira.
Night or weekend mobilisation usually adds 20 percent.
How is generator lifting carried out?
- Confirm the set weight from the nameplate and the shipping documents.
- Survey the route, ground bearing and crane standing position.
- Prepare a lift plan with radii, boom length and load chart figures.
- Inspect slings, shackles and lifting eyes before the lift starts.
- Brief the crew, set the exclusion zone and appoint a banksman.
- Lift slowly, keep the load level and land it on prepared bearers.
Sources
Lifting Operations and Lifting Equipment Regulations guidance, Manufacturer installation manuals, Nigerian Factories Act safety provisions, Crane load chart data
Start with the real weight
Nameplate data gives the prime rating, not the shipping weight. A canopy adds panels, a base tank and a silencer, so the real load can be 30 percent higher.
Weigh the set on a certified weighbridge when the figure is uncertain. Guessing is the most common cause of overloaded cranes.
Mark the centre of gravity on the crate. An offset load swings and can shock the crane beyond its rated capacity.
Use the marked lifting points
Most industrial sets have four lifting eyes or a purpose-built lifting frame. Use all of them and keep the sling angle within the manufacturer's limit.
Never sling around the alternator louvres, exhaust or fuel tank. These parts are not structural and will deform under load.
Use softeners at sharp corners and check that the hooks cannot slip out when the load tilts.
Choose the crane by radius, not by tonnage
A 25 tonne crane can lift 25 tonnes only at its shortest radius. At 12 metres the capacity may fall below 4 tonnes.
Measure the radius from the slewing centre to the load hook, then read the load chart. Add a margin of at least 10 percent.
Check the ground. Outriggers need compacted, level ground with timber or steel mats. Soft laterite can fail under load.
Rigging gear and inspection
Use slings rated for the load and inspect them before every lift. Cut strands, broken wires and distorted shackles mean the gear is out of service.
Colour-coded inspection tags make it easy to see when gear is due for test. Keep the register with the lifting equipment.
Never use homemade hooks, rebar eyes or knots in place of certified gear.
The exclusion zone and the banksman
Barricade a radius equal to the load height plus 2 metres. Nobody stands or walks under a suspended load.
One banksman controls the lift with agreed hand signals or radio. Too many voices create confusion at the worst moment.
Stop the lift if wind picks up, if the load tilts, or if anyone enters the zone. A pause costs minutes; a dropped set costs lives.
Landing, setting and handover
Land the set on bearers or a prepared plinth, never directly on bare ground. Check the base for distortion before releasing the slings.
Re-check alignment, anti-vibration mounts and cable entries after the set is in place. A twisted base causes vibration and bearing wear.
Record the lift, the gear used and the names of the crew. The record supports insurance and future planning.
Related guides from this series
- Diesel Generator Base and Vibration Isolation Installation
- Diesel Generator Site Layout and Positioning in Nigeria
- Diesel Generator Skid and Trailer Mounted Mobile Sets in Nigeria
About the author
Illuminate Engineering Limited installs and relocates generator sets across Nigeria. This guide reflects site practice on commercial and industrial projects.
Frequently Asked Questions
Can a forklift move a 100 kVA generator?
Only if its rated capacity at the actual load centre exceeds the set weight. A 2,000 kg set needs a forklift rated well above that, with a trained operator.
Who is allowed to plan a generator lift?
A competent person with lifting knowledge should write the plan. The crane operator and banksman must review it before the lift.
What is the biggest cause of lifting accidents?
Wrong load weight and poor ground conditions. Both are easy to check before the crane arrives.
Do I need insurance for a generator lift?
Yes. Confirm that the crane contractor carries liability cover and that your own policy covers the set during transit and lifting.
Conclusion
A generator lift is a short job with a long list of things that can go wrong. Weight, radius, gear and ground decide the outcome.
Spend the time on a written plan and a competent crew. The cost is small compared with a dropped set or an injury.