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WP iGen4750PRO
The Westinghouse iGen4750PRO is the entry point into the PRO range and the one most mobile detailers start with. It gives you 3,800 running watts through a single 15 amp weatherproof outlet, with an RCD safety switch built into the control panel. That is enough to run one machine properly: a Kranzle pressure washer, a BigBoi blower, or a small air compressor. At 36 kg dry it is the only unit in the range one person can realistically load into a van on their own.
Australian machines are either 10 amp or 15 amp. Power quality is not the limiting factor here, since all three PRO generators give pure sine wave output with less than 2.5% total harmonic distortion. What limits you is the single 15 amp socket, and the 4,750 starting watts available to get a motor turning. Allow two and a half times a motor's rating for starting, or three times for an air compressor that starts against tank pressure rather than venting its head pressure when it stops.
| Equipment | Supply it needs | On the iGen4750PRO |
|---|---|---|
| Kranzle KHD7/122TS | 10 amp | Runs comfortably |
| Kranzle KHD10/122TS | 10 amp | Runs comfortably |
| Kranzle KHD10/122 TST | 15 amp, 1.8 kW | Runs comfortably |
| Kranzle K1152TST | 15 amp, 2.8 kW intake | Needs about 7,000 W to start. Use the iGen7500PRO |
| BigBoi WashR Tradie | 10 amp, 1800 W peak | Runs comfortably |
| BigBoi WashR Flo V2 | 10 amp, 1600 W peak | Runs comfortably |
| BigBoi BlowR PRO+ MKII | 10 amp, two 1600 W motors | Runs comfortably |
| Chicago Pneumatic Whisper 2-50 compressor | 10 amp, 1.5 kW | Runs comfortably |
| Chicago Pneumatic CPRC 2.5-50 compressor | 10 amp, 1.86 kW | Runs. Starting needs 4,650 W, or 5,580 W if it starts under pressure |
| Pressure washer plus blower together | 20 A of supply | Not supported, one machine at a time |
| Pressure washer plus compressor together | 20 to 25 A of supply | Not supported, step up to the iGen10000PRO |
| Machine plus lights or a battery charger | Under 15 A combined | Possible if the total stays under 15 A. Not a second motor load |
Before you order: Petrol generators must be run outdoors in open air. Never run one inside a van, trailer, garage or any enclosed space, and keep the exhaust away from open doors and windows. Carbon monoxide is odourless.
This generator is not suitable for connection to a fixed multiple earthed neutral (MEN) electrical installation. It is designed for standalone plug and socket use. Any connection to a building's wiring must be done by a licensed electrician with the correct changeover equipment.
| Specification | Detail |
|---|---|
| Maximum starting power | 4,750 W |
| Continuous running power | 3,800 WRated output at 1.0 power factor. |
| Continuous running current | 15.8 A |
| Output | 240V, 50 Hz, single phase |
| Receptacles | 1 x 15 A, IP66A standard 10 amp plug fits a 15 amp socket. |
| Voltage and waveform control | Digital inverter, pure sine wave output |
| Total harmonic distortion | Less than 2.5%Safe for electronically controlled equipment. |
| RCD safety switch | Yes, approved for workplace use |
| Alternator | Brushless, permanent magnetNo brushes to wear out or replace. |
| Engine | 190 cc, 1 cylinder, 4 stroke, overhead valve, air cooled |
| Maximum engine speed | 4,500 rpm |
| Fuel | Unleaded petrol, 91, 95 or 98 RONEthanol blends such as E10 are not recommended. |
| Fuel tank capacity | 12 litres |
| Run time at 1/4 and full load | 14 hours / 4.2 hours |
| Noise level at 1/4 and full load | 57 / 67 dB(A) at 7 m |
| Oil capacity and viscosity | 600 mL, SAE 10W-30 |
| Low oil shutdown and alarm | Yes |
| Starting method | Local and remote electric, plus recoil backup |
| Battery | 12V, maintenance free, with plug-in charger |
| Overload protection | Electronic, with indicator and push button reset |
| Data centre display | Output voltage and frequency, current and cumulative run times |
| Control panel lights | LED, operable at all times |
| Spark plug | Torch F7RTC |
| Generator dimensions (L x W x H) | 660 x 374 x 574 mm |
| Weight, dry / wet | 36 kg / 46 kg |
| Packed dimensions and weight | 750 x 460 x 588 mm, 42 kg |
| Product code | WP iGen4750PRO |
| Warranty | 2 year domestic use, conditions apply |
Every PRO model has the same 15 amp IP66 outlet and the same RCD safety switch, so your leads and machines plug in identically whichever one you choose. What changes is how many outlets there are and how much capacity sits behind them.
| iGen4750PRO | iGen7500PRO | iGen10000PRO |
|---|---|---|
| 3,800 running watts | 6,000 running watts | 8,200 running watts |
| 15.8 A continuous | 25 A continuous | 34.2 A continuous |
| One 15 amp outlet | Two 15 amp outlets | Two 15 amp outlets and 12V DC |
| One machine at a time | One machine with large reserve | Compressor and washer together |
| 36 kg dry | 60 kg dry | 85 kg dry |
| 12 L tank, 14 h at 1/4 load | 15 L tank, 14.6 h at 1/4 load | 30 L tank, 19.8 h at 1/4 load |
The 10 amp and 15 amp KHD10/122 both run on it, and so does the KHD7/122TS. The K1152TST is the exception: at 2.8 kW intake it needs around 7,000 watts to start on the standard two and a half times rule, and this generator supplies 4,750 starting watts. For that machine, start at the iGen7500PRO.
Multiply the motor's rating by two and a half. A 1.8 kW pressure washer motor needs about 4,500 watts to start, and this generator supplies 4,750. For an air compressor that starts against tank pressure, rather than venting its head pressure when it stops, allow three times instead. That is the one case where a 10 amp compressor can be too much for this model.
Yes. In Australia a 10 amp plug fits a 15 amp socket, because the 15 amp socket has a larger earth pin opening. The reverse is not true, which is why a 15 amp machine cannot be plugged into a 10 amp point.
No. This is a one machine generator. There is a single 15 amp socket on the panel, and two machines together need 20 to 25 amps of supply before you allow anything for the surge each motor draws when it starts. If a compressor and a pressure washer need to run together, the iGen10000PRO is the model for that.
It monitors current flowing out and back through the circuit. If some of that current takes another path, for example through a person or through water into the ground, the RCD disconnects the supply. Australian workplace rules for portable generators supplying construction and demolition sites require RCD protection, which is why the PRO models have it fitted from the factory rather than relying on an add-on lead. Test it with the test button before each job.
57 dB(A) at 7 metres at quarter load, rising to 67 dB(A) at full load. Quarter load is roughly conversation level at that distance. Bear in mind that under a pressure washer the engine will not be sitting at quarter load, so expect something between the two figures in real use.
Not directly. This unit is not suitable for connection to a fixed multiple earthed neutral (MEN) installation. It is built for standalone plug and socket use. Any connection to fixed wiring needs a licensed electrician and the correct changeover equipment.
Unleaded 91, 95 or 98 RON. Ethanol blends such as E10 are not recommended. The 12 litre tank gives up to 14 hours at quarter load or 4.2 hours at full load.
Plug-in battery charger, wireless remote control, extendable handle and wheels, engine oil, and the standard accessory kit. No assembly is required beyond adding oil and petrol.
Equipment suitability above is general guidance based on the manufacturer's published supply requirements for each machine, not a performance guarantee. Actual results depend on your equipment, lead length and condition, ambient temperature, altitude and how continuously you run the load. Specifications are supplied by Westinghouse Outdoor Power Equipment and are subject to change without notice. If you are unsure whether this generator suits your setup, contact us with a list of your machines before ordering.
| Document Name | File Type | Download |
|---|---|---|
| Westinghouse iGen4750PRO Spec Sheet | Download |
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