Right-size your generator to your trailer load. Three tiers cover everything from a single PM office to a multi-trailer construction campus. All units are towable diesel generators with integrated fuel containment and 24-hour tanks.
Each tier matches a common construction site configuration. Click through for full specs, use cases, and FAQ.
Size to 70-80% of generator capacity for optimal efficiency and fuel economy. Running a generator at full load continuously increases fuel consumption and accelerates wear. Office trailers need 220V single-phase, 100-amp service minimum. If your load is borderline between two tiers, go up — the fuel savings from running at 60-70% capacity will offset the slightly higher rental cost.
Key specifications across all three generator tiers.
| Specification | 20-25 kW | 30-40 kW | 50+ kW |
|---|---|---|---|
| Prime Rating | 20 kW / 25 kVA | 30-36 kW / 36-45 kVA | 56 kW / 70 kVA |
| Standby Rating | 22 kW / 27.5 kVA | 40 kW / 50 kVA | 62 kW / 77 kVA |
| Voltage | 120/240V 1-ph; 208-480V 3-ph | 120/240V 1-ph; 208-480V 3-ph | 120/240V 1-ph; 208-480V 3-ph |
| Fuel | Diesel | Diesel | Diesel |
| Noise Level | ≤60 dBA | ~66 dBA | ~65 dBA |
| Fuel Tank | Integrated 24-hr with containment | Integrated 24-hr with containment | Integrated 24-hr with containment |
| Best For | Single office trailer | Office + breakroom or 2 trailers | Multiple trailers, complexes |
Multiquip WhisperWatt enclosures keep noise levels at 60-66 dBA across all tiers. Meets municipal noise ordinances and keeps your office trailer usable for phone calls and meetings during generator operation.
Every generator includes an integrated 24-hour fuel tank with built-in secondary containment. No separate drip tray or containment berm required for the generator itself. Simplifies SPCC compliance on your site.
All units switch between 120/240V single-phase and 208-480V three-phase configurations. Handles standard office trailer 220V service and three-phase equipment loads from the same generator.