Working Around Overhead Power Lines with Ladders

Working Around Overhead Power Lines with Ladders

Every year workers are killed by coming into contact with overhead lines they believed were far enough away. The distance looks generous from the ground, the line is higher than it looks, and once a long aluminum ladder starts moving in the wrong direction it is already too late. This is the hazard where a single moment of setup care matters more than everything else on the job.

Minimum Approach Distances

OSHA sets minimum approach distances for unqualified workers by voltage, and they are measured from the worker and any conductive object - including the ladder in his hands - to the line. For lines up to 50kV the unqualified-worker distance is ten feet. It is not the distance you keep out of caution; it is the closest anyone who is not trained and qualified on energized work may ever come.

Distances change with voltage, and voltage is not marked on a pole in a way a passerby can read. If you cannot confirm the voltage from the utility, treat the line as the highest voltage in the area and work to the furthest distance that could apply. There is no prize for getting closer.

Fiberglass vs Aluminum Near Power

Fiberglass is non-conductive when it is clean and dry. That qualifier matters. Dirt, dust, moisture, some paints and any metal accessory on the ladder can carry current, so a fiberglass ladder with a wet film of dust on the rails is not the insulation the label implies. Keep it clean and dry, and inspect the rails for cracks or exposed fiber before using it on electrical work.

Aluminum conducts, full stop, and it should not be used near lines no matter how careful the setup looks. The trade-off with fiberglass is weight - our fiberglass stepladders and fiberglass extension ladders carry the same duty ratings as the aluminum versions and are heavier to carry and set.

Setting Up and Moving the Ladder

Set the ladder up so the top and the whole length stay outside the approach distance in every position it can reach, not just the position it is in. A ladder that is fine standing still can swing into a line the moment two people try to raise it, and raising an extension ladder is when most contact happens.

Watch the ground, too. Overhead lines often route above driveways, alleyways and drop-off areas where a worker will carry a ladder on his shoulder. Carrying a 28-foot extension upright on a shoulder is the single most common way a person brings metal into a line he never looked up at.

When It Is Not a Ladder Job

If the work is inside the approach distance and cannot be moved outside it, it is not a ladder job and it is not a scaffold job. That is a call to the utility to de-energize, get line cover installed, or have the work performed by a qualified crew.

No access equipment solves an energized line. Planning around it is the only thing that does.

Sort the Line Before the Ladder

Look up before you unload. If the work cannot be done outside the approach distance, call the utility before the crew arrives, not after.

We stock fiberglass ladders across the duty ratings and both major brands, and we will help you match the ladder to the work.

Everything ships from 5030 Dexham Rd. Ste. 103 in Rowlett, TX, and local crews can pick up the same day. Call 972-331-1090 and we will tell you what is on the floor right now.