Panels
Subpanel Installation
A properly fed subpanel for a shop, garage, addition, or barn.
What the job involves
A subpanel puts circuit capacity where the work is, which beats running six long circuits back to the main. The part people get wrong is the bonding: a subpanel keeps its neutral and ground separate.
Most of this is sequencing. Do it out of order and you pay for it twice. There is a right way and a fast way to do this, and the fast way is what we end up removing on somebody else’s job a year later.
How we handle it
- Feeder sized for the real load and the distance
- Four wire feeder with neutral and ground isolated at the subpanel
- Its own grounding electrode where it feeds a detached structure
- Labeled and left with room for what comes next
Doing this in the White Mountains
Ponderosa country means trees near lines and squirrels in soffits, and both show up as electrical problems eventually.
Elevation, weather, and the age of the housing stock all change how this work goes here compared with a valley city. Equipment ages faster in this sun, monsoon surge is a real load on the system, and a lot of these houses were built as seasonal property and are now carrying full-time demand.
We would rather find the actual fault than sell you a part that might fix it.
Bus bar rating is the real ceiling
People talk about a panel as though the main breaker is the whole story. It is not. The bus bar, the metal spine the breakers clamp onto, carries its own rating, and that rating is what actually limits the enclosure. A 200 amp main breaker sitting in a panel with a 125 amp bus is a combination we still find, usually because somebody replaced the main and never read the label inside the door.
The label matters for a second reason. Most residential panels allow the sum of the branch breakers to exceed the bus rating, because no house runs everything at once, but they also set a limit on how far past it you may go. That number is printed on the panel and it is enforceable.
So when we look at whether a panel can take another circuit, we read the bus rating, the main breaker, the number of usable spaces, and the manufacturer’s listing together. Those four things decide the answer, and only one of them is visible from the front.
Why labeling matters more than it sounds like it does
A correctly labeled panel is not a nicety. It is what lets the next person, possibly in an emergency, shut off the right circuit on the first try instead of the fourth.
We identify every circuit during the work rather than copying the old directory, because the old directory is wrong on most houses. Circuits get extended, rooms get repurposed, and the label that said kitchen twenty years ago now feeds half the basement.
It costs a couple of hours and it is the part homeowners thank us for most often, usually about a year later when something goes wrong at an inconvenient time.
Permits, utilities, and the day itself
Anything touching the service involves the utility, and that coordination sets the schedule more than our availability does. The meter has to be pulled, the work done, and the meter reset, and those are appointments somebody else controls.
Plan on the power being off for most of a working day on a panel or service change. We can sequence it to land where it hurts least, and in most cases we can keep a refrigerator circuit alive on a cord while the main work happens.
The permit and inspection are part of the job, not an extra. On a service change the inspector will look at the grounding electrode system, the bonding, the working clearances in front of the panel, and the labeling. All four of those are places where corner-cutting shows immediately.
What you get
- LicensedC-11 #192532 and R-11 #192533
- PriceFirm, before the work starts
- Who shows upThe person who quoted it
- PermitsHandled where the job needs them
- AfterLabeled, documented, and cleaned up
Testing before quoting is how you avoid paying for the wrong repair.
Permits, utilities, and the day itself
Anything touching the service involves the utility, and that coordination sets the schedule more than our availability does. The meter has to be pulled, the work done, and the meter reset, and those are appointments somebody else controls.
Plan on the power being off for most of a working day on a panel or service change. We can sequence it to land where it hurts least, and in most cases we can keep a refrigerator circuit alive on a cord while the main work happens.
The permit and inspection are part of the job, not an extra. On a service change the inspector will look at the grounding electrode system, the bonding, the working clearances in front of the panel, and the labeling. All four of those are places where corner-cutting shows immediately.
What goes wrong inside a panel
Panels do not usually fail dramatically. They degrade. A breaker that has tripped a few hundred times has a weaker mechanism than it did new. A lug that was never torqued to spec loosens through thermal cycling, and the resistance at that loose connection turns into heat.
Heat is the thing to watch. A connection carrying current through resistance gets warm, the warmth accelerates the oxidation, the oxidation raises the resistance, and the cycle runs away. That is the mechanism behind most panel fires, and it is entirely visible on a thermal camera months before anything scorches.
The other common finding is a panel that has been worked on repeatedly by people in a hurry. Double-tapped breakers, neutrals doubled under one screw, circuits that were extended rather than replaced. None of it is dramatic on its own and all of it adds up.
Questions we get
How do I know if I need a bigger service?
The honest test is a load calculation, not the age of the panel. If you are adding a charger, a shop, a heat pump, or a hot tub, that calculation is the first step.
Do I have to replace the panel to add circuits?
Not always. If there is physical space and the service can carry the load, a circuit addition or a subpanel is usually the cheaper correct answer.
Is my panel brand a problem?
Some older panels have known failure modes with their breakers. We will tell you plainly whether yours is one of them.
Will you explain what you found?
Always. You get told what the problem actually was, not just that it is handled.
Do you clean up?
The work gets left labeled and clean enough that the next electrician can read what we did.
Towns we cover
Based in Pinetop-Lakeside, covering about forty miles out across Navajo County and the western side of Apache County.
- Show LowOur second base. Panel work and service upgrades on the newer builds off Deuce of Clubs.
- Pinetop-LakesideHome ground. Cabin rewires, fixture work at cathedral-ceiling height, and same-week calls.
- SnowflakeLonger runs out to property on acreage, where the well pump and the house share one panel.
- TaylorOlder service entrances that predate the current code, and the corrections that go with them.
- Heber-OvergaardHeavy second-home territory. Freeze-season calls on places that sat empty since fall.
- LindenBetween Show Low and Pinetop. Remodel wiring and additions on established lots.
- GreerHighest elevation we cover. Generator and backup work for a road that closes in weather.
- ConchoWide-open lots on the Apache County side, often with a long feed from the meter to the house.
- OvergaardPonderosa country. Fixture and circuit work in cabins built across four decades.
- LakesideOlder lakefront cabins where the original wiring was never meant for today’s load.
- PinetopThe cabin core. Small jobs, one outlet or one switch, are most of what we do here.
- White Mountain LakeSeasonal places that need a look before the family arrives and after they leave.
Get it handled
Call (928) 358-2546 or send a message and we will work out what the job actually is.
See recent work or send the details and we will come look.