At 350 kW, a generator stops being a single piece of equipment. The fuel supply, the cable and how the set connects all have to be planned with it. Below are the gas and diesel sets near this size on rent today, the currents involved, and what to settle before asking for a quote. Supplied from Red Deer across Alberta.
350 kW is the size of a mid-sized commercial building on standby, a processing facility, or a construction site with a crane and site trailers. At the 0.8 power factor three-phase sets are rated at, it is 437.5 kVA. A quote listing 440 kVA is describing the same set.
The voltage matters more here than at smaller sizes. At 480 or 600 V the current per phase is a few hundred amps. At 208 V it passes 1,200 A, so the job needs parallel cable runs and a larger connection. That is often why large loads are run at the higher voltages, or stepped down through a rental transformer.
The figures alongside are worked out the same way as the amperage calculation table. The power calculators do the conversion for any other rating.
| A 350 kW load | Works out to |
|---|---|
| Real power | 350 kW |
| Apparent power at 0.8 pf | 437.5 kVA |
| Current at 208 V | about 1,214 A per phase |
| Current at 480 V | about 526 A per phase |
| Current at 600 V | about 421 A per phase |
These cards are drawn from the live inventory, so a set that goes out on a job or comes back to the yard changes what you see here. Each card gives the set's rating, voltage and fuel, and says if it can also be bought or rented to own. A set appearing here does not mean it is free on your dates. The desk confirms availability on the quote.
Burning line gas or a lease supply? The industrial natural gas generator rentals page covers gas analysis, pressure and scrubbing.
For sites with no gas, see diesel generator rental and the fuel tanks that go with it.
Need something smaller or larger? The generators by size table lists every set in kW order. Loads of a megawatt and up are covered on megawatt generator rentals.
Most fleets reach 350 kW with whatever model sits nearest. NexSource also builds its own: the NPI Series of natural gas and propane packages, designed and assembled in Red Deer. The largest of the three is the NPI350, rated at 350 kW and built to parallel with others. It is listed for rent today, and its card is in the gas grid above.
Because the people who built it are the people who service it, parts and field support for the NPI350 come from the same yard it shipped from.
A demand reading from the utility bill or a logged peak already includes the starts and the coincident loads. A set close to that number, or a step above it, will usually carry the site. A figure made by adding up nameplates tends to run high, because rarely is everything on at once.
Large single loads change the answer. A chiller or a big compressor starting across the line asks for far more than its running power for a few seconds. When several start together after an outage, the set has to accept that block of load without the voltage dropping out. Staggered starts, soft starters and drives all reduce what the generator has to absorb.
Oversizing has a cost too. A diesel running at a small fraction of its rating for weeks does not burn clean, which is why a load bank rental sometimes goes out alongside it. The commercial generator sizing guide builds a load profile from the base load up.
At this size, fuel and connections are worth planning early. A diesel near 350 kW burns enough that the tank and the fill schedule are real logistics; the fuel consumption calculator gives a rate to plan around. Getting the power to the load is covered on power distribution rentals and transfer switch rentals.
A single set is simpler to place and connect. Two smaller sets running in parallel give redundancy: if one trips or needs service, the other keeps the critical part of the load up. It also lets one set run on its own when the load is light. Both units need controls that synchronize and share load. These sets in this range say in their own listing that they parallel:
Paralleling generators to scale past 350 kW works through a two- and three-set example.
Estimates are fine to start. Each set is load tested in Red Deer before it leaves the yard, and 24/7 field response stays in place for as long as it is on rent.
A metered peak, a utility bill demand figure, or a sum of nameplates. Each one sizes differently.
Motors, compressors and chillers, with horsepower and starting method, and whether any start together.
Most loads this size are 480 or 600 V. At 208 V the current is high enough to change the cable plan.
Utility gas and its pressure, a lease supply with an analysis, propane, or diesel and a fill schedule.
Into an existing transfer switch or main breaker, or straight to temporary panels.
Where it sits, whether a trailer can reach it, and how many weeks or months it stays.
At 0.8 power factor a 350 kW three-phase load is 437.5 kVA. That is about 526 A per phase at 480 V, 421 A at 600 V and roughly 1,214 A at 208 V. The amperage table on the tools page works the same sum for any other rating.
No. A 350 kVA set at 0.8 power factor delivers about 280 kW, a full size class smaller. If a tender or an old quote gives one figure without the unit, check which it means before comparing sets.
The NPI350 from NexSource's own NPI Series is a 350 kW natural gas and propane set, and the page shows whether it is listed for rent today. The grids also show the gas and diesel sets either side of 350 kW that are on rent now.
Yes, when both are built to parallel. Two sets sharing the load also leave one running while the other is serviced. Whether a particular pair can be synchronized is confirmed from each unit's listing before it is quoted.
Gas, where a utility line or a lease supply can feed the set and the gas analysis suits it; it removes fuel deliveries entirely. Diesel where there is no gas, with a tank sized to the run time and fills planned around the burn rate.
Each job is quoted on its own, with no rate card. The set chosen, the fuel, the rental term, the distance from Red Deer and the cable and distribution needed all change the figure, and the quote is sent in writing.
The quote comes back in writing with the set, the fuel plan and the connection sized together. On units flagged Rent to Own, rental payments can go toward buying the set. NexSource operates from Red Deer and supplies sites across Alberta.
