A site generator on its own terms, not a leisure machine
The Perform 3000 TB comes from SDMO, a manufacturer that has built generators in Brest since 1966 and now belongs to the Kohler group. Rather than an entry-level engine, SDMO fits a 208 cc Kohler CH270, a reference found on hire-fleet machines. Output peaks at 2,800 W and 2,400 W continuous, split across a TB panel built for UK and Ireland site work: two 115 V 16 A sockets plus one 230 V 16 A socket, each on its own breaker.
The tubular frame with anti-shock panels and two side handles allow a two-person carry, with no built-in trolley. This is a generator built for site work, hire fleets and occasional emergency power, not for quiet camping or sensitive electronics: the sections below cover each trade-off in turn.
2,400 W continuous, a narrow gap to peak output
The spec sheet states 2,800 W peak and 2,400 W continuous, a gap of just 14%, tighter than many entry-level generators that inflate their peak figure to look good on the box. That continuous output covers most light site tasks: power tools, a sump pump, lighting, a small compressor. It will not cover several heavy loads running together, nor start a single-phase motor with a large inrush current without some margin to spare.
Against the Einhell TC-PG 35, the continuous gap is smaller than the peak numbers suggest: 2,600 W against 2,400 W, just 200 W more, well short of the 300 W gap shown at peak (3,100 W against 2,800 W). The Scheppach SG5200D, at 4,200 W continuous, plays in another league entirely, at the cost of 148 kg and roughly double the budget.
A 4.1 litre tank: 3.2 hours at three-quarter load
The 4.1 litre tank gives 3.2 hours of runtime at three-quarter load, around 1.3 litres per hour at that setting. That figure applies to a partial load, not to maximum continuous output: no consumption figure has been established precisely at 2,400 W continuous, so 1.3 L/h should be treated as a representative order of magnitude for typical use, not as a worst-case full-load ceiling.
Tank size is the most concrete limit of the Perform 3000 TB: 4.1 litres against 15 litres for the Einhell TC-PG 35 and 16 litres for the Scheppach SG5200D, nearly four times less. For a job lasting a few hours, that changes nothing. For a full day on site, a jerry can becomes necessary, where both rivals can run a full day on one tank.
96 dB(A) guaranteed: an open-frame unit, not a quiet companion
Guaranteed sound power for the Perform 3000 TB reaches 96 dB(A), with 81 dB(A) at one metre and 67 dB(A) at seven metres in operation. That is a normal level for an open-frame generator of this output, but well above a compact inverter unit, which aims for quiet running at the cost of a much lower continuous output.
That level rules out night-time use near neighbours or discreet home back-up power: an open-frame unit in this class never gets close to an inverter generator, even one running flat out. For daytime site work, on the other hand, 96 dB(A) sits within the normal range for comparable professional equipment: it is not a manufacturing flaw, only a category trait to accept before buying.
Not an inverter: output that does not suit sensitive electronics
The Perform 3000 TB is a conventional generator, not an inverter: output voltage and frequency shift with load and engine speed, rather than being electronically stabilised. No harmonic distortion figure is published for this model, a figure that neither SDMO nor the Einhell TC-PG 35, also conventional at this price point, discloses. For tools, a pump or site lighting, this power quality causes no issue at all. For a laptop, a sensitive charger or precision electronics, an inverter generator or an intermediate UPS remains the safer option.
On starting, the manual pull cord is the only option, with no button or starter battery. A summer/winter setting adjusts mixture richness to ease cold starting, a standard feature across this range of Kohler engines. No independent data has been found for this exact model after several seasons of use: that is a note of caution, not a proven fault.
Brest since 1966, a Kohler CH270 engine, and soon a Rehlko badge
SDMO has built generators in Brest since 1966, up to units of several thousand kVA for industry. The Perform 3000 TB inherits that professional culture: a Kohler CH270 engine rather than a generic block, a four-stage Quad Clean air filter that genuinely protects the intake on a dusty site, and compliance with the Stage V emissions standard in force across Europe. The manufacturer's warranty runs to three years, above the entry-level standard, backed by a parts and repair network.
Over the long term, no extensive track record specific to this exact model has been found: the Perform 3000 TB does not yet carry the multi-year history that older references in the category can point to. At 45.5 kg, the unit is carried by two people thanks to a tubular frame with anti-shock panels that shrugs off rough handling on site, but with no wheels at all, where a direct rival such as the Einhell TC-PG 35, itself 5.5 kg lighter, includes a wheel kit as standard.
Against the Einhell TC-PG 35 and the Scheppach SG5200D
At £559.99, the Perform 3000 TB sits between entry-level petrol units and heavier site generators. Here is how it compares with the cheaper Einhell TC-PG 35 and the far more powerful Scheppach SG5200D diesel.
| Criterion | SDMO Perform 3000 TB | Einhell TC-PG 35 | Scheppach SG5200D |
|---|---|---|---|
| Continuous output | 2,400 W | 2,600 W | 4,200 W |
| Engine | Kohler CH270 | Einhell four-stroke | 418 cc diesel |
| Tank | 4.1 L | 15 L | 16 L |
| Power type | Conventional | Conventional | Conventional |
| Wheels included | No | Yes | Yes |
| Weight | 45.5 kg | 40 kg | 148 kg |
| Observed price | £559.99 | £293.33 | £1,099.99 |
The Einhell TC-PG 35 is cheaper and carries a larger tank with wheels included: on the spec sheet and the price tag, it wins outright. What the SDMO offers in exchange does not show up in a table: a Kohler engine with a genuine professional reputation, four-stage air filtration, a three-year warranty and a proper parts network. It is a trade-off between purchase cost and cost of ownership, one that tips towards the SDMO as soon as the machine sees regular use. The Scheppach SG5200D answers a different need entirely: nearly double the continuous output and a full day's runtime, at the cost of 148 kg and roughly double the budget. For two sockets used a few hours at a time, the Perform 3000 TB remains the most rational choice of the three.
