EV Charging Stations in an Office Building — What a Building Manager Must Know Before Installing

In every office building I manage, the same moment now arrives: a new tenant asks "do you have an EV charging station?", and the property owner requests "let's put two or three stations in the parking garage, it's not a big deal." This is exactly the point where you need to stop. A charging station is not just another socket on the parking-garage wall — it is a large and prolonged electricity consumer, a new source of heat and fire risk, and a change that alters the load balance of the entire building. Whoever installs without planning the infrastructure, the load management and the safety — creates an expensive and dangerous problem instead of solving a need. In this article I will explain what you really need to know before installing, from direct experience in managing buildings.

Why a Charging Station Is Not "Just Another Socket"

An ordinary socket in the parking garage is meant for a drill or a vacuum cleaner — short and occasional consumption. A basic AC charging station draws about 16 to 32 amperes continuously, sometimes for six to eight hours. The difference is not only quantitative but essential: this is adding a constant and significant consumer to a system that was designed for a certain load only.

In a typical office building, the electrical system was designed for lighting, air conditioning, elevators and office sockets — not for continuous currents of vehicle charging. When you add stations without recalculating the load balance, one of two outcomes occurs: the system heats up and reaches the limit of its capacity, or main breakers trip and shut down parts of the building. Both outcomes are bad, and both can be prevented with proper planning.

I once tried to explain the difference to a property owner like this: "When you turn on a large air conditioner — that's a load that lasts an hour or two and then the temperature stabilizes. A charging station is like running a second air conditioner at night, when you're not in the building to watch it." That changed the conversation.

That is why I treat charging stations as an integral part of the building's electrical system, not as an accessory. The same principles that guide electrical system maintenance in an office building apply — and even more so — to the charging infrastructure.

First Step: Checking the Building's Electrical Capacity

Before talking about a station model or a supplier, the first question is an engineering one: how much free capacity does the building even have? The answer starts with the connection contract with the electricity company (IEC) and with the capacity allotted to the building. The building has an upper limit, and everything below it is already divided among the existing consumers today.

Analyzing Existing Load versus Free Capacity

An electrician with the appropriate certification needs to measure the actual peak consumption over a period — not rely on the capacity "on paper." Many buildings consume much less at peak than what is installed, and therefore there is sometimes headroom for charging. But in another building the peak is close to the limit, and every additional station will require enlarging the connection with the IEC — a process that can take months and cost tens of thousands of shekels — or a smarter solution: a load management system.

I once tried to save this measurement step and make do with the panel data. It turned out the panel had not been updated after a renovation that introduced two heavy air conditioners. An expensive lesson.

Dynamic Load Management — the Technology That Changes the Equation

A load management system monitors the building's consumption in real time and distributes the free capacity among the stations dynamically. When the building is loaded — during the day, when the air conditioning and elevators are operating — the stations receive less; at night, when the building is empty, they receive more. This makes it possible to install more stations than the "raw" capacity would allow, without endangering the system and without an expensive connection enlargement.

• Without load management: each station is fixed at maximum capacity — you very quickly hit the building's ceiling.
• With static load management: a fixed ceiling for charging — safe but wasteful of free capacity during off-peak hours.
• With dynamic load management: real-time distribution according to the building's consumption — the best exploiter of existing infrastructure.

For a building with two large tenants that run heavy air conditioning from 9 to 17, a load management system can double the number of stations that can be installed without touching the connection contract.

The Electrical Infrastructure: What Needs to Be Built Correctly

After we have determined how much capacity is available, comes the actual engineering. Sound charging infrastructure includes components you must not skimp on — each of them is also a safety component:

• A dedicated panel for charging: the charging stations should be fed from a separate, protected and marked panel — not hung on an existing panel that is already overloaded. This separation also allows a dedicated emergency shut-off.
• Appropriate electrical protections: a residual current device (RCD) of the correct type for EV charging, coordinated circuit breakers, and protections against short circuit and earth fault — in accordance with the installation instructions and the Israeli electricity regulations.
• Correct conductor cross-section: a high, continuous current requires conductors of an appropriate cross-section and a planned cable route — a conductor that is too thin overheats and may cause a fire.
• Sound and measured earthing: without reliable earthing there is no safety in charging. This is one of the first checks in accepting the system, and one of the common points of failure in hasty installations.
• Marking, maintenance accessibility and mechanical protection: the stations in the parking garage are exposed to vehicle impacts — physical protection is required (protective bollards, a protected location) and convenient access for maintenance.

It is important to understand: such an installation is not the work of a "neighborhood electrician." It requires planning by an electrical engineer, execution by a holder of the appropriate certification per the electricity regulations, and a documented acceptance test before operation. The Electricity Authority and the electricity regulations (1991 and their updates) set the installation rules, and deviating from them is not just an offense — it is a real risk to human life and property.

Fire Safety — the Risk That Is Talked About Too Little

This is the part I devote the most attention to, because it is the least understood. An electric vehicle charges a lithium-ion battery, and in the rare case of a failure — a manufacturing defect, mechanical damage, or faulty charging — the battery may enter a process of thermal runaway: an intense, self-sustaining fire that is very difficult to extinguish with ordinary water, and that releases toxic gases. In a closed underground parking garage, such an event is a particularly severe scenario.

That is why fire safety at charging stations does not start at the station but in the parking garage as a whole:

• Early fire detection: smoke and heat detectors in the area of the stations, connected to the building's detection system — not disconnected from it.
• Extinguishing means suitable for lithium batteries: an extinguishing system in the parking garage and means suited to the nature of a battery fire. This is a topic that must be coordinated with a fire safety consultant and with Fire and Rescue (the fire services).
• Smoke evacuation and ventilation: in an underground parking garage, a sound smoke-evacuation system is critical — both for evacuating people and for the firefighting teams entering to extinguish.
• Location and zoning: the location of the stations, distances and fire partitions affect the spread of an event — a factor planned in advance and not after the fact.
• Emergency shut-off: a means to rapidly disconnect the supply to the stations in an emergency, accessible to the emergency teams and clearly marked.

All of this integrates with the principles of fire safety in the building under the law, and requires reference in the building's field file and coordination with Fire and Rescue. Adding charging stations is a substantial change that may require updating the existing safety array — not a transparent addition that can be done quietly.

A note from experience: in a building maintained by a single manager, the temptation to ignore the fire-safety aspect is great — because there is no one to see and check. That is exactly why I wrote it out explicitly in the risk survey for every building I work in.

Accessibility — a Requirement That Is Often Forgotten

When planning charging parking spaces in an office building, it must be remembered that they too are subject to the accessibility principles under the Equal Rights for Persons with Disabilities Law and the accessibility regulations derived from it. If disabled parking spaces are allotted in the building, you must ensure that the planning of the charging stations does not harm accessibility to them — that the width of the space, the access route and reaching the station are preserved for a wheelchair user as well.

Poor planning that blocks a disabled parking space or creates an obstacle in the accessible path is a violation of the law — a topic I expanded on in the accessibility law guide for office buildings. It is preferable to incorporate the accessibility consideration at the planning stage, not to discover the problem after the stations have already been installed.

Regulatory and Licensing Aspects: What the Manager Must Know

The regulatory landscape in the field of electric charging is developing fast. A few anchors every building manager must know:

• The electricity regulations and the Electricity Authority: set the rules of safe installation, the required protections and the permitted certifications. Every installation must comply with them — there are no exceptions.
• The Business Licensing Law and fire safety: a change in the safety array of a parking garage may be relevant to the licensing conditions and the fire services' requirements — see also the business licensing checklist for an office building.
• Building and planning permits: adding electrical infrastructure, panels and cable routes may require engineering coordination and sometimes a building permit from the local authority.
• Building insurance: adding fire risk and expensive equipment changes the risk profile. It is mandatory to notify the insurance company — failure to report may lead to policy cancellation at the time of a claim.
• Position documents for the floor owners: in a building with different floor owners, a change in the shared electrical infrastructure may require consent or advance notice under the agreement between the rights holders.

The guiding rule: any change that adds electrical load and fire risk to the building is a substantial change that requires professional planning, approvals and updating of the existing compliance fabric — not an action performed "quietly."

Preventive Maintenance of Charging Stations — Where Everything Connects

The installation is only the beginning. A charging station is electrical equipment that works under load, exposed to a dusty and humid parking-garage environment, and touched by changing users. Without planned preventive maintenance it turns from an asset into a risk. In the maintenance plan I build for a building that installs stations, I include:

• Checking the electrical protections: testing the function of the RCD and the circuit breakers at a defined frequency — these are the first safety components to fail silently.
• Checking earthing and its continuity: a periodic measurement that confirms the protection is still sound and that no hidden disconnections have formed.
• Thermal inspection of connections and panels: loose connections heat up without making a sound. A periodic thermal image locates them before they fail.
• Checking physical condition: cables, connectors, mechanical protection and signage — wear and vehicle impacts that accumulate over time.
• Checking the load management system: confirming that the system limits as required, reports faults, and that the parameters have not changed.

All of these should enter the building's documented maintenance cycle, alongside the other systems. If you build such a plan, integrate it with the annual preventive maintenance checklist — the charging stations are a line in an orderly plan, not a separate island. Proper integration of monitoring is sometimes enabled through a building management system (BMS), which can concentrate the load data and the alerts in one place.

The Correct Order of Operations: How to Approach the Project

If you are considering charging stations, this is the order I recommend:

• 1. Load analysis: measuring peak consumption and free capacity by a professional — before any decision on the number of stations.
• 2. Engineering planning: an electrical engineer plans a panel, protections, cable route and load management.
• 3. Fire safety and accessibility planning: coordination with a safety consultant, Fire and Rescue and accessibility considerations — in parallel with the engineering planning, not after it.
• 4. Regulatory and licensing check: checking whether approvals are required, updating the business license and notifying the insurance company.
• 5. Execution and acceptance testing: installation by a certified holder and a documented test before operation.
• 6. Documentation and maintenance: updating the building file, entering it into the preventive maintenance plan and a service contract with a supplier.

The bottom line: an EV charging station is an upgrade that adds real value to an office building and attracts tenants — but only when it is done as a planned engineering-safety project. The proactive approach — to check, to plan, to maintain — protects the building, the users and you as managers.

At Domera we accompany office-building owners in the planning, compliance and maintenance of advanced electrical infrastructure — including charging stations. For property management services and to arrange an initial review, talk to us.