If you own an older home in Vancouver, there’s a decent chance you’ve asked some version of this question: Is 100-amp service enough, or do I need 200 amps?
It sounds like a technical detail, but it affects real-life stuff pretty fast. Can you add an EV charger installation without tripping breakers? What happens if you want a heat pump, induction range, hot tub electrical, or a legal suite? Will your panel still make sense after a renovation?
A lot of people assume 200A is always better. Sometimes it is. Sometimes it’s money spent on capacity you may never use. The right answer depends on how the property is heated, what appliances you have, what you plan to add, and how much headroom you want for the next 10 or 20 years.
Here’s the practical version of the 100A vs 200A decision, with a focus on Vancouver-area properties.
Your electrical service rating is the amount of current your property can safely receive from the utility through the main service equipment. In most homes, that means a 120/240V single-phase service.
Very roughly:
A 100A service can supply up to about 24,000 watts
A 200A service can supply up to about 48,000 watts
That sounds simple enough, but homes don’t run every load at full power all the time. Real electrical planning is based on demand, diversity, and load calculations, not just adding every breaker and panicking at the total.
Still, the service size matters because it sets the ceiling. A smaller service can work fine in a modest home with gas heat, gas hot water, and no major add-ons. A larger service gives you more room for electric heating, vehicle charging, larger kitchens, suites, workshops, and the usual “we might add that later” projects.
A lot of Vancouver homes were built when electrical demand looked very different.
An older detached house might have started life with:
Smaller kitchen loads
Few dedicated circuits
Gas furnace or boiler
Gas range
No air conditioning
No EV charging
No hot tub, sauna, or backyard office
Fewer electronics overall
That same house today may be expected to handle:
Heat pump equipment
Electric water heating
Induction cooking
A secondary suite
EV charger installation
Home office equipment
Hot tub electrical or sauna electrical
Renovation-related new circuits
More general plug loads than anyone planned for decades ago
That’s why 100A panels that were once perfectly normal now feel tight. The issue isn’t that 100A is “bad.” It’s that many homes have outgrown the assumptions built into that service size.
I don’t think 100A deserves the bad reputation it sometimes gets. For plenty of properties, it still works well.
A 100A service may be a reasonable fit if the property is smaller and the major loads are limited. Think along these lines:
A small or mid-sized home
Gas furnace or boiler
Gas water heater
Gas range or other non-electric cooking
No EV charger
No hot tub or sauna
No major suite addition planned
No large workshop equipment
No full electrification project in the pipeline
In that setup, 100A can be completely workable. It may even leave room for moderate updates, depending on the load calculation and panel condition.
This matters because people sometimes confuse “older” with “unsafe” or “insufficient.” Those are separate questions. A 100A service can be safe and code-compliant. It just may not have much expansion room.
For some condos, townhomes, and smaller detached houses, staying with 100A is the sensible answer. If your actual demand is modest, upgrading to 200A just because it sounds more future-proof may not pay off.
Now the other side.
A 200A service is often the better fit for modern living, especially if you expect the property to use more electricity over time. It gives you more breathing room, which is useful because home upgrades rarely happen one at a time.
A 200A service often makes sense if you have or want:
Electric baseboards, electric furnace, or other heavy electric heating
Heat pump systems with backup electric heat
Electric water heating
Induction range or all-electric kitchen
EV charger installation
Secondary suite or lane house
Air conditioning
Hot tub electrical
Sauna electrical
Large renovation plans
A workshop, garage equipment, or other sustained loads
This is where 200A tends to stop feeling like an upgrade and start feeling like the practical baseline.
Take a pretty common Vancouver example: a detached house with a suite, one EV charger, a heat pump, an electric dryer, and plans for a kitchen renovation. Could that be made to work on 100A in some cases? Maybe. Would I want to build that plan around a tight service limit if there’s a realistic path to 200A? Probably not.
The point of a larger service isn’t to use more electricity just because you can. It’s to avoid designing the property around constraints that keep showing up later.
The best service-size decision starts with load planning, not guesswork.
That means looking at the property as it actually functions, and how it will function after the next project. A proper load calculation done by a licensed electrician is the cleanest way to make the call.
Here’s what usually goes into that planning.
Start with the big electrical users:
Space heating
Water heating
Range
Dryer
Air conditioning or heat pump
Existing EV charging
Hot tub or sauna
Suite loads
Commercial equipment, if it’s a business property
These are the loads that move the needle.
This is where people often undercount. If you’re already thinking about any of these, include them now:
Renovation electrician work for a new kitchen
Panel space for future circuits
EV charger installation
Basement suite conversion
Heat pump conversion
Hot tub electrical
Sauna electrical
New appliance package
Garage or workshop power
It’s usually cheaper and less frustrating to plan once than to upgrade in pieces.
Even if the service size looks acceptable on paper, the panel itself may not be.
Sometimes the real issue is not the amp rating. It’s that the panel is full, outdated, damaged, or tied to equipment electricians no longer like working with. In those cases, you may need a panel replacement, a service upgrade, or both.
A crowded 100A panel is often what pushes the conversation. There may simply be nowhere sensible to land new circuits.
This part sounds soft, but it matters.
A retired couple in a gas-heated home has different needs than a family with two EVs and plans for a suite. The same square footage can lead to very different electrical demand.
If your household is moving toward electrification, 200A usually gives you more flexibility. If your usage is stable and modest, 100A may remain the right fit.
A few practical examples help.
A 1,200-square-foot bungalow with gas heat, gas hot water, gas range, standard lighting, and no EV charger. The owners want some residential electrical services done during a bathroom update and maybe a few added circuits.
That property may be fine on 100A, assuming the panel is in good shape and the load calculation supports it.
A 1,700-square-foot home with electric dryer, heat pump, one planned EV charger installation, and a kitchen renovation that adds an induction range.
That’s the kind of property where 100A may become awkward. You might be able to juggle loads, but it stops feeling comfortable.
A detached home with a suite, heat pump, electric water heater, EV charging, and future hot tub electrical. That is the profile where 200A usually feels justified without much hand-wringing.
For commercial electrical services, the answer is even more dependent on actual equipment. A small office may not need much more than lighting, plugs, and HVAC. A shop, restaurant-adjacent space, or service business with specialized equipment is another story.
Commercial properties should never rely on home-style guesswork here. Load planning matters even more.
People sometimes imagine an upgrade as “swap the panel and done.” Sometimes it’s fairly straightforward. Often it isn’t.
A real service upgrade can involve several parts of the electrical system.
First comes the planning. A licensed electrician reviews the property, existing loads, future needs, and local requirements. For permitted work, the calculation and design decisions support the application and inspection process.
If you’re hiring for Vancouver electrical services, this is one of those times when credentials matter. A service upgrade is not basic handyman territory.
In many upgrades, the panel is replaced with a new 200A-rated panel. That gives you:
Higher service capacity
More breaker space
A cleaner circuit layout
Room for future additions
Sometimes people think they only need “more breakers.” But if the service conductors and main equipment are still 100A, breaker count alone doesn’t solve the actual limit.
Depending on the property, the upgrade may involve:
New service conductors
A new meter base
Mast or conduit changes
Weatherhead and overhead connection work
New main disconnect or combination equipment
Some homes are simple. Some have awkward access, old equipment locations, or utility requirements that add work.
Older systems may need grounding and bonding improvements during the upgrade. This is one of the less glamorous parts of the job, but it matters for safety and inspection.
A service upgrade usually requires coordination with the utility because the incoming service is involved. There may be a scheduled shutdown, reconnect timing, and requirements around the meter or service point.
This is one reason upgrades take planning. It’s not just internal panel work.
Once the new equipment is installed, inspection and utility reconnection follow the local process. Timing can vary. For the property owner, it usually means a planned outage and some scheduling patience.
No one loves that part, but it’s normal.
This is worth saying plainly.
Upgrading to 200A does not magically modernize every circuit in the home. It does not replace old branch wiring unless that work is part of the project. It does not fix overloaded extension-cord habits, poor layout, or old receptacles in need of attention.
You may still need separate residential electrical services after the upgrade, such as:
Dedicated kitchen circuits
Bathroom GFCI protection
Garage or outdoor circuits
Rewiring for a renovation
Dedicated circuit for EV charger installation
Dedicated circuit for hot tub electrical
Dedicated circuit for sauna electrical
A service upgrade creates capacity. It does not automatically reorganize the entire building.
Usually, this comes down to two questions.
First: do you need the capacity now?
Second: if not now, are you reasonably likely to need it soon?
If the property is staying gas-heavy and the electrical demand is modest, 100A may remain the economical choice. If you’re planning electrification or a major renovation, doing the upgrade before walls close and circuits multiply often makes more sense.
I’ve seen people spend money trying to squeeze modern living into undersized service. Load management devices can help in some cases, and there are smart ways to avoid unnecessary upgrades. But there’s also a point where the property is clearly asking for more capacity, and pretending otherwise just creates friction.
Not always. Breakers tripping is one sign of trouble, not the only sign. Capacity planning is about safe, usable headroom, not waiting for obvious failure.
Also no. Some older homes have modest loads and will continue to function perfectly well on 100A.
Square footage helps, but it doesn’t decide the issue. Heating type, appliances, suite status, EV charging, and future projects matter more than people expect.
Often true, especially during renovations, but not always. If you may never use the extra capacity, the upgrade may not be the best use of money.
If you want the short version, here it is.
Stay with 100A if the property has moderate electrical demand, no major electrification plans, and a load calculation says you have enough capacity.
Lean toward 200A if you want one or more of the following: EV charger installation, electric heating, a suite, an all-electric kitchen, hot tub electrical, sauna electrical, or a renovation that adds significant new loads.
For businesses, the same logic applies, but commercial electrical services should be sized around actual equipment and operating patterns, not rules of thumb borrowed from houses.
And one last practical note: when this decision is close, future plans usually break the tie. If you expect the property to become more electric over time, 200A tends to age better.
The 100A versus 200A question is really a question about how you live now and how you expect the property to function next.
A smaller service can still be perfectly reasonable. A larger service can save you from awkward compromises. Neither is automatically right just because it sounds newer, bigger, or more common.
What matters is a proper load calculation, a look at the panel and service equipment, and an honest conversation about what you plan to add. That’s where a licensed electrician, and ideally an insured electrician familiar with Vancouver-area homes, earns their keep. For renovations, suites, and service changes, a renovation electrician with experience in local conditions can spot issues that don’t show up on a basic checklist.
That kind of planning is less exciting than new fixtures or a shiny charger in the garage. But it’s usually the part that makes the rest of the project work.
Eagle Power delivers professional electrical services for residential and commercial properties, ensuring safety and excellence with licensed experts.
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