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RoseWater Energy three-phase power system

Authorized RoseWater Energy Dealer RoseWater Energy 3-Phase Systems

Custom 208 V three-phase power systems for the largest homes, estates and buildings.

RoseWater 3-Phase Systems

What is a RoseWater 3-phase system?

A RoseWater 3-phase system is a custom-built HUB for homes and buildings with 208 V three-phase service, offered as the Hub3P30, Hub3P45 and Hub3P75 at 10, 15 or 25 kVA per leg. It brings the same always-online conditioning and zero transfer time as the HUB20 and HUB40 to a much larger electrical system.

The system has two pieces: an electronics cabinet with the inverters and a Cordex controller, and a battery cabinet sized to the run time the project needs. Its inverter modules are hot-swappable, so a module can be replaced while the rest keep carrying the load.

RoseWater Energy three-phase power system

Best for

  • Homes and estates on a 208 V three-phase service
  • Mixed-use and small commercial buildings
  • Projects with large mechanical or AV loads

What you get

  • Three sizes: 30, 45 and 75 kVA across three legs
  • 12 to 30 hot-swappable 2.5 kVA inverter modules
  • Batteries sized to the target run time, not a fixed shelf count
  • Cordex controller with Ethernet/SNMP, a web interface and a touchscreen
  • Surge and lightning protection rated for up to 40 strikes of 140,000 V

Specifications

RoseWater 3-Phase Systems specifications

RoseWater 3-phase systems serve 208 V three-phase buildings in 30, 45 and 75 kVA sizes. We size the system to the building's loads with your electrician and engineer.

Power specifications for the RoseWater 3-Phase Systems
Service208 V three-phase
Hub3P3030 kVA (10 kVA per leg)
Hub3P4545 kVA (15 kVA per leg)
Hub3P7575 kVA (25 kVA per leg)
Inverter modules12 to 30, hot-swappable
Module rating2.5 kVA / 2.0 kW each
Storage specifications for the RoseWater 3-Phase Systems
BatterySized to the run time the project needs
Battery chemistryAdvanced lead-acid (carbon)
Protection and control specifications for the RoseWater 3-Phase Systems
Surge ratingUp to 40 strikes of 140,000 V
Solar inputUp to 10 kW with the SBX10
ControllerCordex, with Ethernet/SNMP, web interface and touchscreen
Remote monitoringBuilt in
Install specifications for the RoseWater 3-Phase Systems
EnclosureElectronics cabinet and battery cabinet, side by side
UPS cabinet84" H x 28.1" W x 26.25" D
RoomClimate-controlled, -20°C to 40°C ambient
Warranty3 years from commissioning

Specifications as published by RoseWater Energy on rosewaterenergy.com. Run time depends on what the system carries, so we calculate it in your Power Plan rather than quote a number here.

Sizing

How is a 3-phase system sized?

A 3-phase system is sized from the building’s electrical drawings: the single-line diagram, the riser diagrams and the panel schedules. We gather those from your electrician or engineer, register the project with RoseWater’s engineering team, and work out the kVA per leg and the battery bank together.

Whole-home projects at this scale sometimes call for several HUBs or a 3-phase system plus a generator. RoseWater’s Power Plan treats these as Whole Home protection, designed case by case.

  1. 01

    Share the drawings

    Single-line diagram, riser diagrams and panel schedules from your electrician or electrical engineer.

  2. 02

    Set the loads

    We agree which panels and circuits the system carries, and how long it needs to run on battery.

  3. 03

    Engineer with RoseWater

    RoseWater's engineers confirm the model, module count and battery bank before anything is ordered.

The Power Plan walks through the same load categories RoseWater uses, so we start your design with real information.

Build Your Power PlanBook a consultation

Who does what

Who installs it?

A licensed electrician makes the connection at your panel, RoseWater’s technician commissions the system, and Boston Automations designs, coordinates, programs and supports it. We manage the schedule between everyone so you deal with one team.

  1. 01

    Boston Automations

    Builds your Power Plan, designs and specifies the system, registers the project with RoseWater's engineering team, coordinates the electrician, programs and integrates the HUB with your home's systems, and supports it for the life of the system.

  2. 02

    Your licensed electrician

    Makes the electrical tie-in at your panel. If you have an electrician you trust, we work with them. If you do not, we bring in one we know.

  3. 03

    RoseWater Energy

    Builds the HUB, delivers it to the install location, and sends an on-site technician to commission it. Commissioning by RoseWater-trained personnel is what starts the three-year warranty.

The rest of the lineup

Other RoseWater systems

If your service size or loads point somewhere else, one of these may fit better. See the full RoseWater lineup or compare a HUB with other backup options.

RoseWater Energy HUB20 single-cabinet power system

RoseWater HUB20

20 kW / 100 A

Power conditioning and battery backup in a single cabinet.

Specs and sizing for the HUB20
RoseWater Energy HUB40 dual-cabinet power system

RoseWater HUB40

40 kW / 200 A

Dual-cabinet power for large, technology-heavy homes.

Specs and sizing for the HUB40

FAQ

RoseWater 3-Phase Systems questions

Which RoseWater systems work on a 208 V three-phase service?

Which RoseWater systems work on a 208 V three-phase service?

The Hub3P30, Hub3P45 and Hub3P75 are built for 208 V three-phase service, at 10, 15 and 25 kVA per leg. The HUB20 and HUB40 can also accept two legs of a 208 V three-phase service when that suits the loads.

How big is a RoseWater 3-phase system?

How big is a RoseWater 3-phase system?

The UPS cabinet is 84 inches high, 28.1 inches wide and 26.25 inches deep. The battery cabinet stands beside it, and its size depends on how much storage the project needs.

Where does a 3-phase system need to go?

Where does a 3-phase system need to go?

It needs a climate-controlled room. RoseWater specifies an ambient range of -20°C to 40°C for the 3-phase system, so we plan the mechanical room with your builder or engineer early.

What information do you need to size a 3-phase system?

What information do you need to size a 3-phase system?

We need the electrical single-line diagram, the riser diagrams and the panel schedules. With those, RoseWater's engineers and our team can confirm the model and the battery bank.

Where to go next

Build Your Power Plan

Choose what should stay on and get a first sizing for your home.

How a HUB works

Diagrams that show how the HUB handles surges, sags, noise and an outage.

Backup Power for a Custom Home

For builders, architects and electricians: timing, room space, drawings and the budget line.

Whole House Power Conditioning

What dirty power is, why lights flicker and equipment reboots, and how conditioning at the panel fixes it.

Lead-Acid vs Lithium Home Batteries

Safety, life span, indoor rules and recycling, and why RoseWater chose advanced lead-acid.

Backup power FAQ

Straight answers on batteries, generators, solar and installation.

Talk to us

Call (781) 333-8003 or send a note and we will set up a consultation.

Planning a 208 V Home or Building?

Send us the drawings or start a Power Plan. We will work with your engineer and RoseWater to size the right 3-phase system.

Build Your Power Planor call (781) 333-8003Book a consultation