Sourcing petrol inverter generators from China

Duty and classification for petrol inverter sets

Read from the UK Trade Tariff on 1 October 2026, heading 8502 covers electric generating sets and rotary converters. Petrol inverter generators belong within the spark-ignition generating-set family. The supplied petrol lines all carry 0% duty for goods from China, with no listed anti-dumping or countervailing duty, suspensions or attached import controls.

The table shows the spark-ignition output bands. The smaller bands are relevant to portable petrol inverter sets; the larger bands provide classification context rather than typical buying options. Confirm the engine type and declared output with your broker using finding your commodity code. See the wider generator guide for other generating sets.

Specify continuous output and inverter performance

Specify continuous output separately from peak starting output, together with voltage, frequency, socket arrangement, earthing and residual current protection. Agree how the set will be tested with the buyer's intended loads. Include waveform distortion, response to load changes, economy-mode behaviour, starting method, fuel tank, carrying handles and access to service parts.

Name the engine, inverter module, enclosure and silencer configuration in the order. Confirm applicable engine emission approval requirements with the relevant authority; type approval proves that the engine meets the latest emissions standards. Obtain machinery conformity documents and electrical safety evidence. For outdoor power generators under 400 kW, confirm applicable noise limits and noise marking requirements with the relevant authority; the equipment must also be accompanied by a declaration of conformity.

Worked duty example

Illustrative example, not a quote: Illustrative order: 300 petrol inverter generators; FOB and freight values are illustrative under 8502 20 20 90, invoiced at £90,000 free on board, with £5,000 of freight and insurance to the UK. The customs value is £95,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £95,000, so it is £19,000. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Output: load-test sampled units at the agreed continuous rating, record voltage, frequency and waveform distortion, and check recovery when loads change and economy mode operates.

Fuel and starting: check cold starting, restart after running, fuel joints, shut-off controls, oil access and leaks. On arrival, inspect the tank, casing and carrying handles for transit damage before testing.

Electrical protection: check sockets, earthing, insulation resistance, earth continuity and the agreed protective functions. Arrange quality inspection against the approved sample and specification.

Documents and noise: match engine plates to emission approval and model details to conformity documents. Compare the guaranteed sound power label with the noise report for the actual enclosure and silencer supplied.

What goes wrong

A peak output claim can hide inadequate continuous power. An inverter label alone does not establish waveform quality: test the finished set under the intended loads. Watch for voltage sag, unstable economy-mode operation, loose socket connections, fuel leaks and reports covering a different engine or enclosure.

Plan arrival tests around exhaust exposure. HSE advises never using petrol-powered equipment indoors or in enclosed spaces unless ventilation needs have been fully assessed. Agree the test location before running samples, and reject instructions that encourage enclosed-space use without addressing that assessment.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.