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Emergency and backup power

UPS systems

Uninterrupted power for servers, networks, controls and sensitive equipment.

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Uninterruptible power supply installation for Edmonton offices, industrial controls and data rooms: sizing, dedicated circuits, bypass, batteries and generator integration.

Why a UPS

Even a one-second outage or a deep voltage dip can reboot servers, corrupt data, reset PLCs and stop production. A generator takes seconds to start; a UPS covers that gap with no interruption at all. It also cleans up the brief sags, surges and noise that are common on busy commercial and industrial circuits.

  • Server rooms and network closets
  • Security systems, cameras and access control
  • PLCs, SCADA and process controls
  • Point-of-sale and phone systems
  • Medical and laboratory equipment

Small desktop UPS units have their place, but anything beyond a single workstation deserves a properly installed system with a dedicated circuit, correct protection and a way to service it without shutting everything down.

In industrial plants, a UPS often protects controls rather than the motors themselves. Keeping PLCs, HMIs and instruments alive through a brief dip means operators keep visibility and the process can restart cleanly instead of from a cold, unknown state.

Types and sizing

Line-interactive UPS units are common for small racks and edge equipment. Online double-conversion units power the load through the inverter all the time, so the output is always clean and there is no transfer at all when the utility fails. That is the usual choice for server rooms and critical controls.

FIG 01Alberta Electrical
Utility feeding a rectifier, then an inverter, then clean power to loads, with orange batteries on the DC link and a dashed bypass path above.Online double-conversion UPSUtilityRectifierAC to DCInverterDC to ACClean powerto loadsBatteriesstatic / maintenance bypass
Block diagram of an online double-conversion UPS: utility power to rectifier, DC bus with batteries, inverter, and clean output, with a bypass path.

Sizing starts with the real load, measured or calculated, plus room for growth. Runtime is a separate decision: a few minutes to ride through until the generator starts, or longer if there is no generator or equipment needs time to shut down gracefully.

FIG 02Alberta Electrical
An orange curve dropping from long runtime at light load to short runtime at full load, with a note to size for actual load plus growth.UPS runtime vs loadlongshortlight loadfull loadruntime falls quickly as load risessize for your actualload plus growth
Curve showing UPS battery runtime falling quickly as connected load increases.

Installation done right

Larger UPS systems need dedicated input circuits sized to the unit, output distribution with properly labelled breakers or PDUs, and a maintenance bypass switch so the UPS can be serviced or replaced while the load stays powered. Battery cabinets add weight, and some battery types have ventilation and spill-containment needs.

If a generator backs up the UPS, the two must be compatible. Some UPS units react badly to the frequency swings of a small generator. We review both together, and our transfer switch work ties them into a single system.

SafetyOutput is live in an outage

A UPS keeps its output energized even when the utility breaker is off. Equipment on it is never safe to work on just because the building power is out. Label UPS-fed circuits clearly.

Location matters too. UPS units and batteries produce heat, so the room needs adequate cooling, and large battery cabinets are heavy enough that floor loading should be checked in older buildings.

Batteries and service

UPS batteries wear out. Heat shortens their life, and a battery that looks fine may not carry the load when needed. We recommend periodic inspection and battery testing, and replacement on a schedule rather than after a failure. Many units can send alerts and status to your IT team, and we can set up automatic shutdown of servers when batteries run low.

TipSafe check

Look at the UPS display or front panel occasionally. A battery fault, overload or on-bypass alarm means it is time to call.

We can include UPS inspection in the same maintenance plan as your generator and transfer switch, so your whole backup chain is checked on one schedule and reported in one place. That makes it much easier to spot a weak link before an outage does.

What drives cost

We do not post prices. The biggest factors are power rating, runtime and battery type, UPS topology, maintenance bypass and distribution, the circuit work back to the panel and, for larger units, room cooling and floor loading.

Total cost of ownership includes battery replacements over the life of the system, so we include an expected battery maintenance plan in our recommendation.

Questions we hear

How long will a UPS run my equipment?

It depends on the load and battery capacity. Runtime falls quickly as load rises, so we size it for your real load.

Do I need a UPS if I have a generator?

For sensitive equipment, usually yes. The generator takes seconds to start; the UPS covers that gap.

How often do batteries need replacing?

It depends on battery type, temperature and use. Regular testing tells you when.

Can you install a UPS for a home office?

Yes. For most homes a good plug-in unit is enough; we can add a dedicated circuit if needed.

How this job runs

What to expect

  1. Assess

    We measure or calculate the load and agree on runtime and what must be protected.

  2. Design

    UPS type, size, bypass and distribution are selected, and generator compatibility is checked.

  3. Install

    Input circuit, UPS, batteries, bypass and output distribution are installed and labelled.

  4. Commission

    We test transfer to battery, bypass operation and alarms, and set up monitoring.

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Guides

Read before you book

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Power quality and harmonics in commercial buildings

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What to do when the lights go out, how to keep your family warm and safe in a winter outage, and how to use a portable generator without putting yourself or line crews at risk.

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Whole-home surge protection: is it worth it?

How surges happen, what a surge protective device at your panel does, how it works with power bars, and what to expect from installation and upkeep.

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