The gutters over my driveway need clearing twice a year, and for about six seasons I did that job without once looking up past the gutter itself. What finally made me look was a neighbor mentioning, almost in passing, that the wire crossing my driveway was my own service drop, and that it was why he had stopped putting an extension ladder on that corner of his house. I went out and stood under it. I brought a tape measure and never unrolled it. From the ground the answer was already obvious: my ladder, fully extended against that corner, put my head and shoulders about an arm's length from a wire I had never once thought about.
The wire closest to your gutters is usually your own
When people hear "power line" they picture the ones strung along the street, high up and far away. Those are almost never the ones a homeowner gets near. The wire that matters leaves the pole and crosses your yard to a bracket on the corner of your house — the service drop that feeds your meter. It sits at roof-and-gutter height by design, in exactly the airspace where ladders, poles, and long-handled tools go. Ownership of that run is mapped out in where utility wiring ends and yours begins. For ladder purposes it is beside the point. The wire is energized either way.
Coated is not the same thing as insulated
The single most common wrong assumption about overhead wires is that the dark covering on them is insulation. The Consumer Product Safety Commission addresses this directly in its homeowner sheet Ladders and Electricity Don't Mix (Publication 5060), which states plainly that many overhead power lines are not insulated at all, and that where a line does carry a coating, that coating exists to extend the life of the conductor rather than to protect anyone from electrocution. The same document makes a second point worth internalizing: power lines and telephone lines often look alike from below, so the safe assumption is that every overhead wire on your property is carrying electricity. You cannot tell by looking.
Ten feet is the number the trades work to
There is a published clearance figure, and it is worth knowing even though it comes from workplace regulation rather than homeowner guidance. OSHA's rule at 29 CFR 1910.333(c)(3)(i) requires anyone who is not a qualified electrical worker to stay at least 10 feet away from overhead lines operating at 50 kV or less, with an additional 4 inches of clearance for every 10 kV above that. The wording of that rule contains the detail most people miss: the 10 feet applies to the person and to the longest conductive object that person might contact. A fully extended ladder is that object. So is an aluminum gutter scoop on a pole, a paint roller extension, a pool skimmer, or a pruning saw on a telescoping handle. Nothing makes you legally subject to that regulation on your own property, but it is the clearest published benchmark for how much air a non-electrician should leave, and the physics does not check who is holding the ladder.
The placement rule that assumes the ladder goes over
CPSC adds a second number that sounds unreasonable until you understand what it is protecting against. Its guidance is to place a ladder so the distance to the nearest overhead line is at least twice the length of the ladder. That is not a reaching distance. It is a falling distance. A 24-foot ladder that slips at the base or gets caught by a gust does not stop where it was standing — it describes an arc, and the top of that arc crosses a great deal of ground. Read that way, the doubled figure is simply an acknowledgment that ladders fall and that a falling ladder is a moving conductor. In a normal suburban lot that means there are corners of the house where a long extension ladder does not belong, and the job either waits for someone with the right equipment or gets done from the roof side.
What ladder material buys you, and what quietly cancels it
Metal ladders conduct, which surprises nobody. What surprises people is that wooden ladders with metal reinforcement wire in the rails conduct too, and that a fiberglass ladder is only non-conductive while it is clean and dry. CPSC's advice is to use a ladder with non-conductive side rails near overhead wires, with a condition attached: those rails have to be kept clean to keep their protective properties. Fiberglass caked with wet mud or slick with the gutter sludge you just scooped out is no longer the ladder you bought. If a metal or wood ladder is the only one available, the published precautions are to keep it clean and dry, check where every wire runs before setting it up, lower it while carrying or repositioning it, and skip the job entirely on a windy day. That last one gets ignored constantly, and it is the condition that turns adequate clearance into contact.
The chores that put ordinary people under wires
- Clearing gutters and downspouts, which by definition happens at the height where a service drop lands.
- Painting fascia, soffits, or siding on the elevation the drop crosses.
- Roof and chimney repairs, including anyone handing things up from below.
- Trimming branches with a pole saw, where the tool and a wet limb are both in play.
- Installing or removing an antenna or dish, which means carrying a long metal object upright.
- Anything on a telescoping pole — window washing, pool skimming, fruit picking — that extends past where you are looking.
- Carrying an extended ladder across the yard instead of collapsing it first.
If a ladder starts going toward a line
Read this part once while nothing is happening, because the instinct in the moment is exactly backwards. CPSC's guidance is to let the ladder go rather than grab for it. Do not try to move a ladder touching an overhead wire, and do not leave it unattended either — the next person along has no way of knowing it is energized. The call goes to the power company, and the request is to de-energize the line before anyone touches the ladder. If a person is in contact with it, CPSC is explicit that you must not pull them away with your hands; something non-conductive, such as dry wood or a rope, is the only thing that should go near them. If anyone has been shocked, that is a 911 call first, even if they seem fine.
Branches over the drop are usually somebody else's job
Trees that grow into overhead conductors are common, and homeowners routinely try to handle them because it looks like yard work. It is not yard work. Utilities run line-clearance tree programs, generally trim vegetation around their own distribution lines at no cost, and will advise on limbs approaching the drop to your house. That is the call to make. A pole saw is a long conductive tool by design, wet wood conducts more than dry, and a cut branch falling onto a line brings the line down with it. My rule has never cost me anything: if a branch is near the airspace of a wire, I do not cut it, and the utility hears about it instead.
What I actually changed after standing under mine
Very little, and that is sort of the point. I walked the perimeter once on a clear day and marked in my head which two corners of the house have a wire in their airspace. Those corners are now jobs I hire out or approach from the roof side, and the ladder gets carried around collapsed rather than upright. Gutter work happens the same way everywhere else. The adjustment cost an afternoon of paying attention, which is a poor return only if you assume the alternative is fine. It is not: the deaths CPSC counted between 2000 and 2009 — fifteen non-work-related electrocutions of consumers whose ladders touched a wire around the home — happened to people doing chores exactly this ordinary.