Mobile CT Scanner Power Requirements: What Hospital Facilities Teams Should Plan For

A mobile CT scanner may arrive on a trailer, but it still needs the electrical infrastructure required to operate advanced diagnostic imaging equipment.

For hospital facilities and engineering teams, that makes power one of the first technical questions to resolve before delivery.

Atlas Medical notes that a typical mobile CT unit requires 480V, 3-phase power. However, hospitals should not treat that figure as a universal specification for every trailer or scanner.

The electrical requirements should always be confirmed for the specific mobile CT unit assigned to the project.

Getting that information early gives facilities teams time to evaluate the site's existing electrical capacity, determine whether electrical work is necessary, coordinate responsibilities, and have the connection ready before the mobile unit arrives.

The most important rule when planning power for a mobile CT project is simple:

Plan around the actual unit being delivered.

Mobile CT scanners can contain different imaging systems and trailer configurations. Electrical requirements can therefore vary.

Atlas Medical offers mobile CT scanner solutions equipped with systems from Siemens, GE, Canon, and Philips.

Before making changes to hospital electrical infrastructure, facilities teams should obtain the electrical specifications associated with the proposed unit.

That information should become part of the project's technical planning documentation

Atlas Medical's existing site-preparation guidance identifies 480V, 3-phase power as a typical requirement for a mobile CT unit.

That gives facilities teams a useful starting point.

But it should not replace unit-specific documentation.

Before electrical work begins, confirm details such as:

• Required voltage
• Phase
• Required electrical capacity
• Connection requirements
• Connection location
• Cable or connection considerations
• Distance between the electrical source and mobile unit
• Any unit-specific electrical requirements

CT imaging systems place substantial demands on electrical infrastructure.

The scanner must support the gantry, X-ray generation, computers, controls, cooling systems, and other components required for imaging operations.

Three-phase electrical systems are commonly used for equipment with significant electrical loads because they can provide power efficiently and consistently.

For the hospital project team, however, the practical question isn't simply why the scanner uses three-phase power.

The more important question is:

Can our proposed mobile CT location provide the required electrical service?

That needs to be answered before delivery.

Power planning should begin during site evaluation—not when the trailer reaches the hospital.

Consider a hospital preparing for a CT suite renovation.

The project team has selected a location for the mobile trailer.

The clinical team has confirmed the scanner configuration.

The renovation shutdown date is already scheduled.

If facilities discover shortly before delivery that the proposed location cannot provide the required electrical service, the temporary imaging timeline may become more difficult.

An earlier review gives the team more options.

Rather than treating power as a single checkbox, facilities teams can break the process into four decisions.

1. Obtain the Unit Specifications

Request the technical requirements for the actual mobile CT unit being proposed.

Do this before designing or modifying electrical infrastructure.

2. Compare Requirements With Existing Infrastructure

Determine whether the proposed location has access to electrical service capable of supporting the specified unit.

This assessment should be performed by appropriately qualified personnel.

3. Identify Any Required Site Work

If the existing infrastructure doesn't match the project requirements, determine what preparation is needed and how it affects the deployment schedule.

4. Verify Readiness Before Delivery

Do not assume completed electrical work automatically means the site is ready.

Include electrical readiness in the final pre-delivery review with the mobile CT provider and hospital project team.

The easiest place to park a mobile CT scanner is not always the easiest place to power it.

This creates an important planning relationship:

Trailer location ↔ Electrical source ↔ Patient access ↔ Hospital workflow

For example, one proposed location might provide excellent patient access but require more extensive infrastructure preparation.

Another location might be closer to existing electrical infrastructure but create operational challenges for patient movement.

This is why electrical planning should occur alongside site selection rather than after the site has already been finalized.

Atlas Medical's broader guide on preparing for a mobile CT scanner covers additional considerations such as surface and space preparation, network communications, consumables, and regulatory requirements.

This article focuses specifically on the electrical side of that planning process.

Electrical readiness doesn't mean the entire site is ready.

A mobile CT project may also require coordination around:

Physical Site

The trailer needs an appropriate location and sufficient space for operation.

Atlas Medical's current mobile CT units can be up to 14.5 feet wide by 50 feet long, so the exact unit footprint should be considered during site planning.

Network Connectivity

The temporary scanner needs to work within the hospital's imaging environment.

Atlas Medical states that its mobile CT solutions can connect with existing PACS/EHR environments, with Atlas IT coordinating with hospital IT on areas such as network configuration and DICOM routing.

Patient Access

Patients need a practical route between the hospital and temporary imaging environment.

Operational Workflow

Radiology staff, supplies, patients, and information still need to move efficiently while imaging takes place outside the permanent CT suite.

Power should therefore be treated as one part of a coordinated deployment plan.

The imaging system isn't the only equipment using power.

A mobile CT trailer also relies on environmental systems that help maintain appropriate operating conditions.

Atlas Medical's existing content notes that mobile CT trailers use built-in HVAC systems that comply with FGI requirements to manage environmental conditions inside the trailer.

That is another reason hospitals should work from the complete electrical specifications of the mobile unit rather than focusing only on the scanner itself.

Discovering a power limitation does not automatically mean a mobile CT project is impossible.

It means the limitation needs to be identified early enough to evaluate available options.

The appropriate solution depends on the hospital, proposed location, mobile unit, rental duration, and project.

Instead of making assumptions, facilities teams should provide site information to the mobile imaging provider and determine what infrastructure would be necessary for the proposed configuration.

This is particularly important when the mobile CT will support a renovation or equipment replacement with a fixed shutdown date.

Power preparation should appear as an actual milestone in the mobile CT deployment schedule.

A simplified project sequence might look like this:

Mobile CT selected

↓

Technical specifications provided

↓

Proposed location reviewed

↓

Electrical requirements compared with hospital infrastructure

↓

Required site work identified

↓

Electrical preparation completed

↓

Pre-delivery readiness verified

↓

Mobile CT delivered and connected

↓

System setup, integration, and readiness activities completed

↓

Clinical operations begin

Clear responsibility matters.

A useful project discussion can separate the work into three areas:

The exact responsibilities will depend on the rental agreement and hospital project.

Documenting them early can help prevent assumptions between teams.

Instead of using a generic site-prep checklist, facilities teams can use the following questions during their technical review:

About the unit

• What exact mobile CT unit are we receiving?
• What scanner is installed?
• What are the unit-specific electrical specifications?

About the hospital site

• Can the proposed location support those requirements?
• Where will the electrical connection be located?
• Is additional electrical work required?
• Could another trailer location reduce infrastructure requirements?

About responsibility

• What does Atlas Medical provide?
• What is the hospital responsible for preparing?
• Will an outside electrical contractor be required?
• Who verifies electrical readiness?

About timing

• When must the electrical connection be completed?
• When will readiness be reviewed?
• Could electrical work affect the planned delivery or clinical start date?
  

Electrical planning can also influence the hospital's overall mobile imaging strategy.

If extensive infrastructure work is necessary, decision-makers may need to consider that work when evaluating:

• Proposed trailer location
• Rental duration
• Construction schedule
• Temporary imaging budget
• Deployment timing
• Alternative site locations
• Longer-term imaging plans
  

Atlas Medical provides mobile CT scanner rentals for hospitals managing renovations, overflow, equipment failures, new programs, and other temporary imaging requirements.

Atlas Medical's mobile CT fleet includes systems from Siemens, GE, Canon, and Philips, along with PACS/EHR integration support, applications training, and technical support.

For hospitals preparing their site, Atlas Medical also provides guidance through its Preparing for Your Mobile CT Scanner resource.

Facilities teams should discuss electrical requirements early in the planning process so the specifications for the proposed mobile unit can be evaluated against the hospital's available infrastructure.

If your hospital is preparing for a renovation, equipment replacement, or temporary CT capacity project, contact Atlas Medical with your expected timeline and site information so the appropriate mobile CT configuration and technical requirements can be reviewed.