Introduction
In most large commercial and industrial facilities, medium voltage switchgear sits quietly in the background, doing its job without much attention. It doesn’t ask for much – no daily check-ins, no complaints, just occasional maintenance and the bit of respect it deserves.
That is, until there is a problem.
When switchgear fails, it has a way of going from “out of sight, out of mind” to “the only thing anyone is talking about” in a matter of seconds.
At ELCCO Electric, we’ve seen both sides of this story across Maui, projects that were carefully planned and executed with minimal disruption, and projects that began with an unexpected failure and quickly turned into a race against time, logistics, and budget realities.
Interestingly, both types of projects usually end successfully. Power gets restored. Systems get upgraded, and new equipment is installed. Everyone eventually exhales and life goes on.
But the path to get there – and how painful it is along the way – depends almost entirely on one thing:
Whether the project was planned… or the project was forced.
Life on Maui: Where Time Is Not Always on Your Side
On the mainland, a delayed piece of gear might set you back a few weeks. On Maui, it can reshape your entire project and facility. The island’s unique logistics amplify every risk when projects are reactive instead of planned:
- Extended procurement lead times for specialized medium voltage equipment—often 20 to 52+ weeks depending on manufacturer and configuration
- Limited contractor and engineering resources on-island, meaning qualified crews can’t simply be summoned on short notice
- Mandatory ocean shipping for all major equipment, with no fallback for air freight on large gear
- Permitting (sometimes including SMA requirements) and utility coordination with MECO that requires advance scheduling and local expertise
- Staging and laydown constraints, especially for urban or resort properties with limited space
In other words, Maui is not the place you want to be making last-minute infrastructure decisions. And yet, that’s exactly what happens when switchgear is allowed to run to failure.
Two Projects, Two Very Different Experiences
The contrast between planned and unplanned switchgear projects becomes very real when you look at how they actually unfold in the field.
Kalana O Maui: A Project That Went Quietly – On Budget and On Schedule
Kalana O Maui is a large government facility, and like many well-run operations, the team there paid close attention to their electrical infrastructure. They maintained their equipment, monitored its condition, and when it became clear that an upgrade was needed, they didn’t wait for failure to make the decision for them.
Instead, they planned. Engineering and design were coordinated early. Procurement timelines were aligned with known lead times. The project was built around the facility’s operational needs—not the other way around.
When it came time to execute, the switchover was performed during a short, scheduled outage overnight.
- No temporary power
- No extended downtime
- No surprises
From the outside, it was almost uneventful – which, in this line of work, is exactly the goal and the litmus test for a successful project.
505 Front Street, Lahaina: When the Schedule Is Not Yours Anymore
At 505 Front Street, the story was very different. A flood event caused catastrophic damage to the switchgear. There were early warning signs and deferred maintenance – just immediate failure. And with that, the project timeline stopped belonging to the facility.
Power needed to be restored quickly, which meant deploying extensive temporary power solutions—generators, cabling, fuel logistics—the kind of setup that is effective, but expensive and far from ideal.
Meanwhile, replacement gear had to be procured under emergency conditions, subject to the same long lead times that exist whether you plan ahead or not. Except now, everything was urgent.
The project was executed successfully. Power was restored. The system was replaced. But the experience was fundamentally different:
- The timeline was significantly longer
- The cost was substantially higher
- The operational disruption was significant and uncontrolled
- None of it was on the facility’s terms
The Real Cost of “Successful” Emergency Projects
Here’s the part that often gets overlooked: even in failure scenarios, projects still get completed. ELCCO is proud to deliver on time and on budget whether a project is planned or emergency-driven. But “on budget” means something very different depending on how the project starts.
Consider what an unplanned emergency response typically adds to a project that a well-planned one avoids entirely:
| Cost Category | Planned Project | Emergency Response |
| Temporary Power (generators + fuel + cabling) | Minimal to none | $25,000–$60,000+ depending on duration |
| Expedited Freight / Shipping Premium | Standard rates, planned in advance | Significant premium—if expediting is even possible |
| Design Flexibility | Full options: phasing, upgrades, long-term planning | Limited—must match existing conditions quickly |
| Operational Downtime | Short, scheduled overnight window | Days to weeks of disruption |
| Staff / Operational Stress | Low—team is prepared and in control | High—reactive, high-pressure environment |
Technically, both projects can hit their numbers. But one of those numbers is a lot easier to live with.
What Proper MV Switchgear Maintenance Actually Looks Like
Stop the reactive break-fix model with a clear and consistent model. Maintenance matters, but what does it actually involve? For facility managers who aren’t electrical engineers, here’s what a proactive maintenance program for medium voltage switchgear looks like in practice.
Annual Inspections
- Infrared (IR) / Thermal Imaging Scan: Identifies hot spots caused by loose connections, failing contacts, or overloaded components before they become failures. This is one of the most cost-effective tools in the maintenance toolbox.
- Visual Inspection: Look for signs of corrosion, moisture intrusion, pest activity, oil leaks (on oil-filled equipment), damaged insulation, or any physical deterioration of enclosures and components.
- Insulation Resistance (Megger) Testing: Measures the integrity of insulation on cables, transformers, and bus work. Declining IR values over time are an early indicator of insulation breakdown.
Every 3–5 Years (or Per Manufacturer Schedule)
- Circuit Breaker Testing and Maintenance: Breakers should be operated and tested under controlled conditions, with contact resistance measured and timing tested. Breakers that are never exercised can seize or fail to open when needed.
- Contact Inspection and Cleaning: Internal contact surfaces should be inspected for pitting, erosion, or contamination, and cleaned or replaced as needed.
- Protective Relay Testing: Relays coordinate the entire protection scheme. A relay that isn’t tested can fail to trip a breaker during a fault—turning a manageable event into a catastrophic one.
- Bus and Connection Torque Verification: Bus connections can loosen over time due to thermal cycling. Re-torquing to manufacturer specifications prevents resistive heating and contact degradation.
Ongoing / As-Needed
- Arc Flash Study Updates: If load configurations change, an arc flash re-evaluation ensures that safety labels and protective equipment requirements remain accurate.
- Partial Discharge Testing: Advanced diagnostic that can detect early-stage insulation degradation in switchgear and cables without taking equipment out of service.
- Oil Sampling (for oil-filled equipment): Dissolved gas analysis (DGA) of transformer oil provides a window into what’s happening inside sealed equipment.
These tasks aren’t just boxes to check for compliance—they are early warning systems. Each one is an opportunity to catch a developing problem before it becomes a forced outage. We recommend scheduling gear service before a loss to reduce liability.
How to Know When It’s Time to Start Planning a Replacement
One of the most common questions facility managers ask is: “How do I know when my switchgear is approaching end of life?” Here are the key indicators that should trigger a serious planning conversation, not a wait-and-see or break-fix approach:
- Age of Equipment: Most medium voltage switchgear has a design life of 25–40 years. Equipment approaching or past that range should be formally evaluated, even if it appears to be functioning normally.
- Parts and Technical Support Obsolescence: If your switchgear manufacturer no longer produces replacement parts or provides technical support for your model, you are operating without a safety net. A failed breaker with no available replacement becomes a full switchgear replacement under emergency conditions.
- Repeated Maintenance Issues: If the same components are requiring repair or attention on an increasing frequency, this is a pattern—not a coincidence. Escalating maintenance costs and recurrence are a leading indicator of accelerating degradation.
- Failed Electrical Tests: If insulation resistance tests, contact resistance measurements, or relay tests begin showing out-of-spec results, the equipment is telling you something. Don’t ignore the data.
- Visible Physical Deterioration: Corrosion, cracked insulators, moisture damage, burned or discolored components, or evidence of past faults are physical indicators that remaining service life may be limited.
- History of Fault Events: Equipment that has experienced an arc flash, a through-fault, or other significant electrical fault event should be thoroughly evaluated—even if it “seems fine” afterward. Internal damage may not be visible.
- Operational or Capacity Changes: If your facility has significantly increased its electrical load, or if the protection scheme no longer reflects actual system conditions, the existing switchgear may no longer be appropriately sized or protected.
If two or more of these conditions apply to your facility’s switchgear, it’s time to have a planning conversation—not because failure is imminent, but because the window to act on your terms is still open.
Where the Difference Really Comes From
The facilities that consistently experience smooth, controlled switchgear projects tend to have two things in common.
First, they maintain their systems—not just reactively, but proactively. Thermal inspections, testing, cleaning, and ongoing evaluation. These aren’t just compliance tasks—they are the data that drives smart decisions.
Second, they plan. They allow time for engineering coordination, permitting, procurement, and construction strategy. They think through outage windows, phasing, and whether temporary power can be minimized—or avoided entirely.
They make decisions before those decisions are made for them.
Ready to Get Ahead of It?
If your facility’s switchgear is aging, hasn’t been formally evaluated recently, or if you’re simply not sure where you stand—that uncertainty itself is worth addressing.
ELCCO Electric offers facility assessments specifically designed to evaluate the current condition of medium voltage electrical infrastructure and provide a clear-eyed view of what maintenance, planning, or capital investment may be needed—and on what timeline.
There’s no pressure in the conversation. But the best time to have it is before something forces your hand.
