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Line Clearance in Drawings: Picture the Distance, the Standard and the Cut Before You Climb Every Topic on Its Own Page

For line clearance arborists and anyone studying for the ISA Utility Specialist exam. Approach distances, through and side clearing, natural targets, storm work and the job briefing: one topic per page, the drawing first, then what to remember. 70 illustrated pages.

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Every topic, its own pageEach clearance rule drawn, with the explanation right beside it
70 illustrated pages9 parts, from the power plant to the field checklist
Up-to-date sourcesOSHA 1910.269, ANSI Z133 and ANSI A300
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Look Inside the Book

Every page has one big drawing and a box with the distances, rules and steps you need to know:

Plant → transmission (69 kV+) → primary (4–35 kV) → service (120/240 V), in one drawing.
Plant → transmission (69 kV+) → primary (4–35 kV) → service (120/240 V), in one drawing.
OSHA 1910.269, 1910.333, ANSI Z133-2026, ANSI A300-2023 and NERC FAC-003-5 on one page
OSHA 1910.269, 1910.333, ANSI Z133-2026, ANSI A300-2023 and NERC FAC-003-5 on one page
MAD: OSHA Tables R-3, R-6, R-7 and R-8; your employer's distance can be larger, never smaller.
MAD: OSHA Tables R-3, R-6, R-7 and R-8; your employer's distance can be larger, never smaller.
Compartmentalization in 4 walls: the tree seals a wound, it never heals it.
Compartmentalization in 4 walls: the tree seals a wound, it never heals it.
Side clearing done right vs. hedged flat: back to laterals or the trunk, no stubs.
Side clearing done right vs. hedged flat: back to laterals or the trunk, no stubs.
The program loop: inventory → priority → work → audit → next cycle.
The program loop: inventory → priority → work → audit → next cycle.
Downed wires, guy wires and phone cables: all treated as energized until the owner confirms de-energized and grounded.
Downed wires, guy wires and phone cables: all treated as energized until the owner confirms de-energized and grounded.
OSHA 1910.269(c): a briefing before each job, at least 1 per day or shift, more if conditions change.
OSHA 1910.269(c): a briefing before each job, at least 1 per day or shift, more if conditions change.

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These are real pages from the book. The table of contents is the full one: 9 parts and 66 topics.

The Problem Isn't You. It's How It Was Explained to You.

You're in the bucket next to a primary line, and the foreman calls up: how close can you work here? You know there's a number. It just won't come.

Last night you read it in OSHA 1910.269: Tables R-3, R-6, R-7 and R-8, voltage ranges, footnotes, corrections. It was all columns and paragraphs, and none of it tied the number to the wire in front of you.

MAD: OSHA Tables R-3, R-6, R-7 and R-8; your employer's distance can be larger, never smaller.

In the book it's one page. The wire is drawn with an invisible bubble around it, you're drawn at its edge, and a box tells you which table applies and the rule that matters: your employer's distance can be larger, never smaller.

The rest of the book works the same way: the grid from plant to service drop, how a tree seals a cut, directional pruning back to laterals, every downed wire treated as energized, the job briefing. Each one on its own page.

Next time someone asks, you picture the bubble before the table. You've got the number, and you don't need to go back to the manual.

COMPARE FOR YOURSELF

Same Topic, Two Ways to Study It

THIS
  • The manual: line after line of fine print
  • Standards explained only in words
  • You show up to the exam still unsure
Line-clearance tree trimming operations performed by qualified employees in proximity to energized overhead conductors are addressed by 29 CFR 1910.269, whereas work performed by unqualified persons near overhead lines falls within the scope of 29 CFR 1910.333. ANSI Z133 establishes safety requirements for arboricultural operations generally, including electrical hazards, while ANSI A300 governs pruning practices and integrated vegetation management. For transmission facilities operated at 200 kV and above, and certain lower-voltage facilities, vegetation management obligations are further specified in NERC Reliability Standard FAC-003, subject to applicable registration criteria.
FOR THIS
  • Every standard and its scope in one drawing
  • The rule numbers in one box
  • You see it and you get it
OSHA 1910.269, 1910.333, ANSI Z133-2026, ANSI A300-2023 and NERC FAC-003-5 on one page
CONTENTS

Take a Look at the 9 Parts and 66 Topics

How the grid works, the rules, minimum approach distances, tree biology, directional pruning, programs and IVM, storm restoration, crew leadership and a final review: 70 pages, all illustrated.

IHow the Grid Works · pp. 5-12
  1. From Power Plant to the House
  2. Transmission, Distribution and Service Lines
  3. Reading a Distribution Pole Top to Bottom
  4. Phases, Neutral and Common Voltages
  5. Why Electricity Hurts: the Current Path
  6. Trees Conduct: Indirect Contact
  7. Step Potential and Touch Potential
  8. Conductor Sag and Sway
IIThe Rules and Who Can Do the Work · pp. 13-19
  1. Which Standard Covers What
  2. Qualified Line-Clearance Arborist vs. Everyone Else
  3. The 10-Foot Rule for Unqualified Workers
  4. The Second Trimmer Within Voice Range
  5. Determining the Voltage Before You Start
  6. PPE for Line Clearance
  7. Insulated Tools and Their Care
IIIMinimum Approach Distances · pp. 20-26
  1. What a Minimum Approach Distance Is
  2. How to Read the MAD Table
  3. Phase-to-Ground vs. Phase-to-Phase Exposure
  4. Low Voltage Is Not No Voltage
  5. Inadvertent Movement: the Extra Distance
  6. Aerial Lifts Near Energized Lines
  7. Climbing Near Lines
IVTree Biology for Pruning Near Lines · pp. 27-34
  1. How Trees Respond to a Cut
  2. Branch Collar and Branch Bark Ridge
  3. The Three-Cut Method for Heavy Limbs
  4. Removal, Reduction and Heading Cuts
  5. Natural Targets: Where to Cut
  6. Why Topping and Rounding Over Fail
  7. Growth Rates and Species
  8. Spotting a Defective Tree Near the Line
VDirectional Pruning and Clearing Types · pp. 35-43
  1. Directional Pruning in One Idea
  2. The Field Decision, Always in the Same Order
  3. Through Clearing (V-Out)
  4. Side Clearing
  5. Under Clearing
  6. Overhang and Top Clearing
  7. Removal vs. Pruning: When the Tree Should Go
  8. Planning the Clearance Distance
  9. Moving a Limb Away from the Line
VIPrograms, Cycles and Right-of-Way IVM · pp. 44-52
  1. Why Utilities Run a Vegetation Program
  2. Cycle Planning
  3. Hot Spots and Mid-Cycle Work
  4. Integrated Vegetation Management (IVM)
  5. The Wire Zone and Border Zone
  6. Herbicide Methods on the Right-of-Way
  7. Transmission Corridors and NERC FAC-003
  8. Mechanical Clearing Equipment
  9. Talking With Property Owners
VIIStorm Restoration · pp. 53-58
  1. Every Wire Is Energized
  2. Backfeed: the Line That Should Be Dead
  3. Spring Poles and Limbs Under Tension
  4. Trees on Lines: Who Does What
  5. Storm Site Hazards Beyond the Wire
  6. Working Away From Home: Mutual Assistance
VIIICrew Leadership, Job Briefing and Emergency · pp. 59-64
  1. The Job Briefing Is Required
  2. What a Job Briefing Covers
  3. Drop Zones and Communication
  4. First Aid and CPR on the Crew
  5. Electrical Contact: the First Minutes
  6. Aerial and Tree Rescue
IXReview and Field Checklist · pp. 65-70
  1. The Whole Book on One Page
  2. Numbers to Know
  3. Through, Side, Under or Overhang: Which One?
  4. Common Mistakes to Avoid
  5. Pre-Climb and Pre-Lift Checklist
  6. How to Study for the Utility Specialist Exam

One Page, One Topic, All Clear

Think of it this way:

You're giving the tailboard before the first cut. A new trimmer asks why that limb goes back to a lateral instead of just getting shortened. You need the answer in one sentence, right there on the job.

In the book you open the directional pruning page and see one tree, before and after: the limbs growing toward the line taken back to laterals growing away from it.

Side clearing done right vs. hedged flat: back to laterals or the trunk, no stubs.

Same with the rest: the grid from plant to house, the invisible bubble around the wire, how a tree seals a cut, the vegetation program loop, every downed wire treated as energized. Each one on its own page.

Utility Arborist Illustrated is 9 parts and 66 topics, all drawn, and it ends with the numbers to know, a pre-climb and pre-lift checklist and how to study for the utility specialist exam.

What you see drawn, you don't have to memorize.

What's Inside Utility Arborist Illustrated:

Ipp. 5-12

How the Grid Works

Plant to house, transmission vs. distribution, the pole top to bottom, phases and voltages, the current path, indirect contact, step and touch potential, sag and sway.

IIpp. 13-19

The Rules and Who Can Do the Work

Which standard covers what, qualified line-clearance arborist vs. everyone else, the 10-foot rule, the second trimmer, finding the voltage, PPE and insulated tools.

IIIpp. 20-26

Minimum Approach Distances

What a MAD is, how to read the table, phase-to-ground vs. phase-to-phase, low voltage, inadvertent movement, aerial lifts and climbing near lines.

IVpp. 27-34

Tree Biology for Pruning Near Lines

How trees respond to a cut, collar and branch bark ridge, the three-cut method, removal vs. reduction vs. heading, natural targets, why topping fails, growth rates, defective trees.

Vpp. 35-43

Directional Pruning and Clearing Types

Directional pruning, the field decision in the same order, through, side, under and overhang clearing, removal vs. pruning, clearance distance, moving a limb off the line.

VIpp. 44-52

Programs, Cycles and Right-of-Way IVM

Why utilities run a program, cycle planning, hot spots, IVM, wire and border zones, herbicide methods, transmission corridors and FAC-003, mechanical clearing, property owners.

VIIpp. 53-58

Storm Restoration

Every wire is energized, backfeed, spring poles and limbs under tension, who does what with trees on lines, other storm hazards, mutual assistance.

VIIIpp. 59-64

Crew Leadership, Job Briefing and Emergency

The required job briefing and what it covers, drop zones and communication, first aid and CPR, electrical contact in the first minutes, aerial and tree rescue.

IXpp. 65-70

Review and Field Checklist

The whole book on one page, numbers to know, which clearing type, common mistakes, the pre-climb and pre-lift checklist and how to study for the exam.

At the end of the book: The whole book on one page, the numbers to know and a pre-climb and pre-lift checklist.

SHOW ME WHAT'S INSIDE

Plus: 2 Free Books

Utility Arborist Practice Questions (with answers explained)

BONUS 1: «Utility Arborist Practice Questions (with answers explained)»

Value on its own: US$ 17.90

Test yourself with exam-style questions on approach distances, pruning cuts and line clearance rules, and see why each answer is right.

15 Common Line Clearance Mistakes, Before & After

BONUS 2: «15 Common Line Clearance Mistakes, Before & After»

Value on its own: US$ 14.90

See the cuts, distances and job-site habits that go wrong most often, drawn side by side with the right way to do them.

Utility Arborist Illustrated with 2 Free Books

  • Utility Arborist Illustrated: 70 illustrated pagesUS$ 63
  • BONUS 1: Utility Arborist Practice Questions (with answers explained)US$ 17.90
  • BONUS 2: 15 Common Line Clearance Mistakes, Before & AfterUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
YOUR PRICE:
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Who This Book Is For

You're studying for the ISA Utility Specialist exam

You're studying for the ISA Utility Specialist exam

After a long day or a storm shift, you open one page and see one topic drawn, in the same order every time, from the substation to natural targets.

Your exam date is coming up

Your exam date is coming up

The numbers to know, the review page and the practice questions show you what's solid and what still needs another look.

You already run a crew

You already run a crew

Print the job briefing or approach distance page and show it at the tailboard, so new trimmers see the rule instead of just hearing it.

Everything You Get Today

US$ 95.80US$ 27
YES, I WANT UTILITY ARBORIST ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.

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30-Day Guarantee

Try Utility Arborist Illustrated for 30 days, bonus books included.

We refund everything if the file won't open, if the book isn't what you see here, if you were charged twice or if the email doesn't arrive. Just email us.

You pay once. No subscriptions.

Frequently Asked Questions

Is it for me if I've been trimming trees for 20 years?

Yes. It's not a beginner's book: it puts the grid, the standards and the clearance decisions you already deal with in one order, drawn, so you can review them for the certification or explain them to your crew.

Where does the content come from?

From OSHA 29 CFR 1910.269 (checked against the current eCFR text), ANSI Z133 and ANSI A300 (current editions, with the edition year listed on the book's sources page), NERC FAC-003 for transmission and the ISA Utility Specialist exam content outline. It's written for U.S. rules, not a generic arborist book.

Is it official material?

No. It's an independent illustrated study book, not published or endorsed by OSHA, ANSI, ISA, NERC or any utility. It doesn't give you a certificate, a qualification or CEUs: it helps you study for them.

Does it replace my training?

No. It doesn't replace qualification training, on-the-job training or your employer's and utility's procedures. It helps you study and review them.

Are the practice questions the ones on the exam?

No. They're written for this book, in exam style, with each answer explained. They're not official exam questions.

When and how do I get it?

The book and the 2 bonus books come as PDFs by email, to the address you enter at checkout.

Do I have to pay every month?

No. It's a one-time payment. No subscription.

Can I have it on paper?

Yes. It's a PDF ready to print, so you can print it at home or at a print shop and keep it in the truck.

How do refunds work?

You have 30 days. We refund everything if the file won't open, if the book isn't what you see on this page, if you were charged twice or if the email doesn't arrive: just email us.

Before You Close This Page

No more rereading tables that don't stick.

Approach distances drawn around the wire, with the table that applies right beside them.

You show up to the exam or the job site knowing where everything is.

Drawings make studying faster.

The book is right below.

One-time payment: US$ 27 · Guarantee: 30 days · PDF by email

YES, I WANT UTILITY ARBORIST ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.