Trees Near EPB Power Lines in Chattanooga: What EPB Trims, What's Yours, and How to Get a Tree Crew In Safely

Which line is which — and why it decides everything

Stand at the curb and look at the pole. The highest wire, sometimes the top two, is EPB's primary distribution line: high voltage, the line that feeds the transformer and the whole street. Below it may be EPB's fiber and other utilities' cables. The single wire that leaves the pole (or a transformer on it) and runs to the corner of your house is the service drop. EPB's vegetation-management page draws the line exactly there:

• Primary lines — EPB prunes, EPB removes "We only prune trees that pose a potential hazard to primary power lines." EPB prunes to a minimum 10 ft of clearance, more for higher voltages, and overhanging limbs "as high as possible". No tree company should touch these.
• A tree growing directly under the lines — EPB removes it free "If you have a tree growing directly under power lines, we encourage you to let us remove it." EPB cuts it down, grinds smaller limbs, and cuts logs to fireplace length at no charge.
• The service drop to your house — yours "As a property owner, you're responsible for trees that interfere with service lines" from the transformer pole to the home. EPB recommends a reputable local tree service for this work.
• Getting the drop out of the way — EPB lowers it, free EPB will "lower your service line to allow your tree contractor to prune and remove foliage", then reinstall service at no charge. Arrange it before the crew's date.

Why your street gets pruned the way it does

EPB's explanation is straightforward: limbs that grow into lines cause outages, and across the size of its system "it still takes us 5–6 years to complete a single pruning cycle". So when a crew comes through, it prunes limbs back far enough that they will not grow into the lines before the next visit — which is why the cuts look aggressive the year they are made, and why a tree directly under a line ends up V-shaped. The pruning follows the National Electrical Safety Code's requirement that trees within 10 feet of high-voltage lines be kept to specific clearances. Chattanooga's own ordinance backs this up: topping is banned on public trees, but Sec. 32-310(d) exempts "certain trees under utility wires or other obstructions where other pruning practices are impractical", and Sec. 32-312(a)(8) gives utilities annual permits for the work under specifications the City Forester approves.

If the cut looks worse than necessary, you can ask: EPB's page says it offers a free site survey through its online request form and a free consultation at 423-648-1372. Clearance around a primary line is EPB's program, not a homeowner's choice; the survey is how you get a say in how it's done.

Getting a tree crew in safely: the sequence

1. Identify the lines first. Service drop only? Then this is your job and a tree company's. Primary line within 10 feet of any limb that needs to come off? Then step 2 is EPB, not a tree company.
2. Request EPB's involvement. Site survey or tree removal under the lines: EPB's vegetation-management request form, or 423-648-1372. Service-line lowering for your contractor's date: same number. Allow time — EPB schedules this; it is not a same-day service.
3. Tell the tree company what EPB said. A competent Chattanooga crew will ask whether the drop is being lowered and will not quote work in a primary line. A crew that says "we'll just be careful" has told you what you need to know.
4. Check the crew's insurance before the date. Line-adjacent work is exactly where a claim happens. The verification walkthrough takes ten minutes.
5. On the day: the drop is down, EPB has confirmed, the crew works, EPB reconnects. Removal pricing for the tree itself is ordinary — see the cost guide.

What never to do

• Never plant directly under overhead lines. EPB says it twice on one page. The tree will be pruned into a shape you will not like, and eventually removed.
• Never let anyone — you, a handyman, a tree crew — cut within 10 feet of a primary line. EPB's own page puts that work with EPB, and a wet tree conducts.
• Never dig for a stump or a new tree without calling 811. EPB's underground lines and fiber run shallow; the stump-grinding crew should ask whether you have.
• Don't plant climbing vines near poles or guy wires, and keep shrubs 3 feet from the sides and 12 feet from the front of a ground-mounted transformer box, per EPB's guidance.

Planting the right tree in the right place

EPB's rule of thumb: before planting, look up, and put the tree as far from the lines as its mature height on the nursery label. The City's code adds a hard number for street trees — none "closer than ten (10) feet to any overhead electrical or telephone wires unless specifically approved by the City Forester" as a low-growing variety (Sec. 32-311(c)). For a Chattanooga yard that means dogwood, redbud, serviceberry or crepe myrtle near the lines and the oaks, poplars and pines well away from them. Choosing right now is cheaper than any pruning or removal later — and the trimming page covers keeping what you plant in shape.