Backup Generator Installation in Langley: What's Actually Involved

First, why you cannot just run an extension cord

The instinct is understandable. Portable generator in the garage, dryer outlet in the laundry room, someone at the hardware store mentioned a suicide cord. Don't.

Backfeeding a generator through a household outlet sends generator power back through your panel and out through your service drop onto the utility line. A BC Hydro lineworker restoring power to your street expects that wire to be dead. It is not — it is being fed by your generator, and the pole transformer steps that current up to lethal voltages on the way out.

This is not a paperwork violation. People have died from it. Technical Safety BC treats backfeeding as a serious code violation, and there are two safe legal alternatives that cost less than a lawsuit.

The two real options

Manual or automatic. Which one fits depends on how hands-on you want to be, and how long the power might be off.

Manual: inlet box plus a panel interlock kit

You buy a portable generator. We install a weatherproof inlet box outside, run a dedicated feeder back to your main panel, and install a panel-brand-specific interlock kit — a metal slide that physically blocks the main and the generator backfeed breaker from being on at the same time.

When the power goes out, you roll the generator out, plug into the inlet, flip the main off, flip the generator breaker on, and turn on the individual circuits you want powered. Reverse when the utility returns.

The tradeoff: portable, reusable for camping or job sites, works with most common panels (Eaton, Square D, Siemens), lower installed cost. But you have to be home to start it, and capacity is limited to what a portable unit can carry.

Automatic: transfer switch and permanently installed standby unit

We install a natural-gas or propane-fed standby generator on a concrete pad outside, wire it into an automatic transfer switch, and program the switch to sense the loss of utility power and transfer the house's load within seconds. When utility power returns, it transfers back and idles the generator down.

The tradeoff: nothing for you to do, runs while you are away or asleep, and can carry a much larger load. But materially higher installed cost, needs a gas hookup or propane tank, and requires annual maintenance.

The angle that matters here: well pumps

Most backup-generator articles are written for suburbs on city water. Fridge, freezer, Wi-Fi. Fine advice, mostly wrong for a big chunk of our service area.

Once you are north of Fraser Highway on an acreage in Aldergrove, out toward the Otter District, along the Salmon River, or across the border into rural Mission, the odds are high your water comes from a submersible well pump. When the power goes out, that pump stops. Which means:

• No water pressure at any tap. The pressure tank drains within a few flushes.
• No toilets after that. You get one flush per bathroom, then nothing.
• No showers. Not tomorrow morning, not the morning after.
• No livestock water. Automatic waterers stop refilling — horses, cattle, and small livestock burn through a stock tank faster than most owners realize.
• No irrigation. Gardens, greenhouses, and hobby vineyards start losing days.

A "keep the fridge cold" article does not account for any of this. On a Fraser Valley acreage, the well pump is the whole reason to install a generator. The rest of the priority list follows from what else you need running while the well is running.

If this is your situation, the electrical service capacity and the pump's inrush current are the two variables that drive the entire install.

Which circuits to prioritize on a manual setup

For manual operation, you cannot power the whole house. You need to pick. The right shortlist for most Langley and Fraser Valley homes:

• Well pump — first, because everything downstream of losing water gets bad fast.
• Furnace or heat pump air handler — for the shoulder seasons and any real cold snap. Even a gas furnace needs its blower running to circulate heat.
• Fridge and chest freezer — the classic reason people buy generators, still valid.
• Sump pump — if you have a basement in one of the wetter parts of the valley, this is not optional in winter.
• A couple of lighting circuits — enough to move around the house safely after dark.
• A single outlet or two for phones and a router — small draw, high value.

The pump is the one that surprises people. A submersible well pump's motor has to overcome the weight of standing water in the pipe every time it starts. The inrush current can spike to several times the pump's steady-state running current. A generator that looks big enough on paper — matched to the pump's nameplate wattage — will trip the moment the pump kicks on. Sizing the recommended generator against the pump's inrush, not just its running load, is the difference between a system that works and a system that frustrates you every time the pressure tank refills.

What determines the scope of your install

When we walk your property and quote the work, these are the variables we assess. All of them push the scope one way or the other:

• Distance from panel to inlet or generator location. Longer runs mean more conduit, wire, and labor.
• Conduit routing. Finished walls are harder than a crawlspace or unfinished basement. Exterior runs need to be weatherproof and UV-stable.
• Panel capacity and headroom. A panel with no spare double-pole slot needs modification or replacement. Older Federal Pioneer and Zinsco panels usually need to be dealt with before an interlock kit will even fit — see panel upgrade.
• Interlock kit availability for your panel brand. Not every panel supports one. Off-brand or obsolete panels may force a panel replacement plus an interlock, which is a different scope.
• Fuel choice for automatic setups. Natural gas at the property line is easiest. Propane means a tank, a regulator, and a supplier. Diesel is uncommon in residential and adds storage rules.
• Mount location. Exterior wall, garage, or a concrete pad in the side yard — each has different clearance, ventilation, and noise-bylaw implications.
• Existing service condition. If your service entrance conductors or meter base are aging, the install may trigger a broader service upgrade to stay compliant.

We assess all of the above on the site visit and write it into the quote. If any variable pushes the scope past what you had in mind, you see it before you sign.

Permits and inspection

Every backup generator install requires a Technical Safety BC electrical permit. Homeowners can pull a homeowner permit for their own single-family dwelling — strata units, non-strata duplexes, and homes running a business are the carve-outs and need a licensed contractor. Either way, the work has to pass the same inspection, and a failed inspection on a transfer switch means redoing it. Most people hire it out because the electrician's FSR license carries the liability and the rework if the inspector flags something.

Skipping the permit altogether is the risky option. Beyond the fine, unpermitted electrical work can give your insurer grounds to deny a claim if damage traces back to it. This is the same framework we walk through in the EV charger permit guide — same license, same inspection, same insurer exposure.

Timeline

• Site visit and written quote.
• Coordinate the generator unit if you have not bought it — sized against priority-circuit load and, on a well, the pump's inrush.
• Permit pulled, install scheduled.
• Install day: mount the inlet or transfer switch, run the feeder, land the interlock, terminate, test under load.
• Technical Safety BC inspection and sign-off.

Same-day response in most cases, written quote within a day of the site walk.

How to start

Send photos of your main panel, the exterior wall where you would mount the inlet or generator, and — if you are on a well — the pump specs from the pressure switch label. That is enough for a real written quote.

Call (236) 862-1196 or send your project details. We will tell you honestly which setup fits your property.