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NEC Article 600 and the Sign Electrician Exam in Drawings From the Panel to the Lamp

Sign outlets, branch circuits, disconnects, grounding and bonding, neon and GTO, LED power supplies, channel letters and clearances. Every topic has its own page: the drawing first, then what you need to remember. 64 illustrated pages.

YES, SHOW ME ARTICLE 600, ILLUSTRATED

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Every topic, its own pageEach Article 600 rule drawn, with the explanation right beside it
64 illustrated pages8 parts, from the sign path to the pre-exam review
Up-to-date sourcesNEC 2023 (NFPA 70), Article 600 and Chapter 9 tables
PDF by emailFormat

Look Inside the Book

Every page has one big drawing and a box with the code sections and numbers you need to know:

Panel → disconnect (within sight or lockable) → power supply → secondary → grounded sign body, in five colors.
Panel → disconnect (within sight or lockable) → power supply → secondary → grounded sign body, in five colors.
600.5(A): one sign outlet per tenant entrance, on a 20 A minimum circuit with no other load
600.5(A): one sign outlet per tenant entrance, on a 20 A minimum circuit with no other load
Not within sight: lockable in the open position (110.25), location marked at the sign (110.21(B)).
Not within sight: lockable in the open position (110.25), location marked at the sign (110.21(B)).
Grounding = to the branch-circuit EGC (600.7(A)) · Bonding = metal parts tied together (600.7(B))
Grounding = to the branch-circuit EGC (600.7(A)) · Bonding = metal parts tied together (600.7(B))
Neon circuit: 120 V primary → transformer → GTO → electrode → tube, up to 15,000 V on the secondary
Neon circuit: 120 V primary → transformer → GTO → electrode → tube, up to 15,000 V on the secondary
600.12: under 50 V secondary → 600.33; power supply listed per 600.24(A).
600.12: under 50 V secondary → 600.33; power supply listed per 600.24(A).
600.9(A): sign equipment at least 14 ft above vehicle areas, unless protected from physical damage.
600.9(A): sign equipment at least 14 ft above vehicle areas, unless protected from physical damage.
20 A / 30 A, 1200 VA, 125%, 50 ft, 14 AWG, 15,000 V, 20 ft / 50 ft: one page
20 A / 30 A, 1200 VA, 125%, 50 ft, 14 AWG, 15,000 V, 20 ft / 50 ft: one page

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These are real pages from the book. The table of contents is the full one: 8 parts and 60 topics.

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

You're standing at a cabinet sign on a 240 V supply with the switch in your hand, and the question comes up: does this open every hot conductor, or just one leg?

You open the codebook to 600.6. It's one sentence with several rules folded inside: externally operable, all ungrounded conductors, no other load. When you read it as a paragraph, the rules run together.

Not within sight: lockable in the open position (110.25), location marked at the sign (110.21(B)).

In the book, that same section is one page. The switch is drawn, both hot legs run through it in color, and a second load hanging off it is crossed out. Three rules, three marks on one drawing.

Other topics work the same way, each on its own page: the sign outlet at every entrance, grounding vs bonding, the neon secondary up to 15,000 V, the LED power supply, the 14 ft clearance over driveways.

So the next time you pick a disconnect, you know it's right and why, without going back to the codebook.

COMPARE FOR YOURSELF

The Same Topic, Two Ways to Study It

THIS
  • The codebook: line after line
  • Sign outlet rules explained only in words
  • You walk into the exam still unsure
Per Section 600.5(A), each commercial building and each commercial occupancy accessible to pedestrians shall be provided with at least one outlet in an accessible location at each entrance to each tenant space for sign or outline lighting system use. The outlet(s) shall be supplied by a branch circuit rated at least 20 amperes that supplies no other load. Entrances used only for deliveries, service corridors or service hallways intended for service personnel, and emergency exits are not required to have this outlet.
FOR THIS
  • The sign outlet in one drawing
  • The numbers in one box
  • You see it, and it makes sense
600.5(A): one sign outlet per tenant entrance, on a 20 A minimum circuit with no other load
CONTENTS

Take a Look at the 8 Parts and 60 Topics

The sign path, the supply, disconnects, grounding and bonding, neon, LED and channel letters, location and clearances, and a final review: 64 pages, all illustrated

IThe Sign Path and the Exam · pp. 5-9
  1. One sign, one path: panel to lamp
  2. Where Article 600 lives in the NEC
  3. The sign electrician license, state by state
  4. Words the code uses (and the shop doesn't)
  5. How to read a code section fast
IIThe Supply: Branch Circuit and Load · pp. 10-17
  1. The required sign outlet at every entrance
  2. 20 A or 30 A: the branch circuit rating
  3. 1200 VA for the sign outlet
  4. Signs are continuous loads: the 125% rule
  5. Worked example: adding up LED power supplies
  6. Worked example: neon transformers on 30 A
  7. Wiring methods to the sign
  8. Conduit fill for the sign run
IIIDisconnects and Controls · pp. 18-23
  1. One disconnect, all ungrounded conductors
  2. Within sight: 50 feet and visible
  3. When it's not within sight: lockable and marked
  4. The disconnect at the sign enclosure or pole
  5. Timers, photocells and flashers
  6. Disconnect check in four questions
IVGrounding and Bonding · pp. 24-31
  1. Grounding vs bonding: two different jobs
  2. Ground the sign through the branch circuit EGC
  3. The building is not a return path
  4. Bonding conductors: 14 AWG copper minimum
  5. Small metal parts that don't need bonding
  6. Neon in nonmetallic conduit: the separate bonding conductor
  7. Bonding a run of channel letters
  8. Pole signs: grounding the pole and the cabinet
VNeon and the High-Voltage Secondary · pp. 32-40
  1. Neon in one drawing: transformer, GTO, tube
  2. Secondary limits: 15,000 V and 300 mA
  3. Secondary ground-fault protection
  4. Never in series, never in parallel
  5. Wiring methods for the high-voltage secondary
  6. GTO cable and the spacings
  7. 20 ft or 50 ft: secondary length to the first electrode
  8. Tube supports, spacing and electrodes
  9. No more than 1000 V in dwellings
VILED, Class 2 and Channel Letters · pp. 41-49
  1. The LED sign in one drawing
  2. Class 2 power supplies: what the label tells you
  3. Sizing the power supply: watts plus margin
  4. Voltage drop on 12 V runs
  5. Class 2 secondary wiring in the sign
  6. Channel letters: anatomy of a letter
  7. Raceway-mounted vs direct-mounted letters
  8. Retrofit kits: from fluorescent to LED
  9. Listing and markings on every sign
VIILocation, Enclosures and Access · pp. 50-56
  1. 14 ft above where vehicles drive
  2. Pedestrians and combustible materials
  3. Wet locations and drain holes
  4. Where the transformer or power supply goes
  5. Working space at a remote power supply
  6. Attic and soffit installations
  7. Portable and mobile signs
VIIIReview Before the Exam and the Inspection · pp. 57-64
  1. Article 600 numbers on one page
  2. The sign path review, always in the same order
  3. Codebook lookup: from question words to sections
  4. Pairs that get mixed up
  5. Exam-day math, step by step
  6. Inspection walk-through: channel letters
  7. Inspection walk-through: neon and cabinet signs
  8. Before you sit the exam

One Page, One Topic, All Clear

Think of it this way:

You're up on a lift at a storefront, about to hang a run of channel letters, and you need to know: how do these letters get bonded, and to what?

You open that page and see the whole run drawn end to end: the raceway, each letter, the bonding conductor and the EGC going back to the panel, with the 600.7 section marked in the corner.

Neon circuit: 120 V primary → transformer → GTO → electrode → tube, up to 15,000 V on the secondary

The 1200 VA sign outlet, the within-sight disconnect, GTO spacings, the LED power supply and the 14 ft clearance work the same way. Each one has its own page.

Sign Electrician Illustrated has 8 parts and 60 topics, all drawn, and it ends with a review: the Article 600 numbers on one page, exam-day math and inspection walk-throughs.

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

What's Inside Sign Electrician Illustrated:

Ipp. 5-9

The Sign Path and the Exam

You see the whole sign as one path, panel to lamp, so every later rule has a place to land. Where Article 600 sits in the NEC, the key code terms and how to find a section fast. Check your own state's licensing board for its rules.

IIpp. 10-17

The Supply: Branch Circuit and Load

The sign outlet at every entrance, 20 A or 30 A circuits, 1200 VA, the 125% continuous-load rule, worked examples with LED supplies and neon transformers, wiring methods and conduit fill.

IIIpp. 18-23

Disconnects and Controls

One disconnect for all ungrounded conductors, within sight at 50 ft, lockable and marked when it isn't, disconnects at the enclosure or pole, timers, photocells and flashers.

IVpp. 24-31

Grounding and Bonding

Grounding vs bonding, the branch-circuit EGC, why the building is not a return path, 14 AWG bonding conductors, neon in nonmetallic conduit, channel letter runs and pole signs.

Vpp. 32-40

Neon and the High-Voltage Secondary

Neon in one drawing, the 15,000 V and 300 mA limits, secondary ground-fault protection, GTO cable and spacings, the 20 ft or 50 ft secondary length, tube supports and the 1000 V dwelling limit.

VIpp. 41-49

LED, Class 2 and Channel Letters

The LED sign in one drawing, Class 2 labels, power supply sizing, voltage drop on 12 V runs, channel letter anatomy, raceway vs direct mount, retrofit kits and listing marks.

VIIpp. 50-56

Location, Enclosures and Access

14 ft over vehicle areas, pedestrians and combustibles, wet locations and drain holes, where the transformer goes, working space, attics and soffits, portable signs.

VIIIpp. 57-64

Review Before the Exam and the Inspection

Article 600 numbers on one page, the sign path review, codebook lookup, pairs that get mixed up, exam-day math and inspection walk-throughs for channel letters, neon and cabinet signs.

At the end of the book: The Article 600 numbers on one page, exam-day math step by step and inspection walk-throughs.

Plus: 2 Free Books

Sign Electrician Exam-Style Practice Questions

BONUS 1: «Sign Electrician Exam-Style Practice Questions»

Value on its own: US$ 17.90

Practice with exam-style questions on Article 600, circuits, disconnects and grounding. Each answer tells you which NEC section to look up, so you also get faster with the codebook.

15 Sign Wiring Mistakes, Before & After

BONUS 2: «15 Sign Wiring Mistakes, Before & After»

Value on its own: US$ 14.90

See the 15 most frequent sign wiring mistakes side by side with the right way to do them, drawn so you can review them at a glance before the exam or the inspection.

Sign Electrician Illustrated with 2 Free Books

  • Sign Electrician Illustrated: 64 illustrated pagesUS$ 63
  • BONUS 1: Sign Electrician Exam-Style Practice QuestionsUS$ 17.90
  • BONUS 2: 15 Sign Wiring Mistakes, Before & AfterUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
YOUR PRICE:
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YES, I WANT SIGN ELECTRICIAN ILLUSTRATED FOR US$ 27

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PDF by email: We email you Sign Electrician Illustrated as a PDF, together with the two free books. It's a single payment: no installments, no extra charges.

Who This Book Is For

You're studying for your sign license

You're studying for your sign license

You see the job you already know, drawn in code order, so every section has a picture to hang it on.

Your exam date is set

Your exam date is set

The review part puts the Article 600 numbers on one page and shows you how to go from the words in a question to the right section.

You already run sign jobs

You already run sign jobs

Before the inspector shows up, you check the disconnect, the bonding and the clearances against one page each.

Everything You Get Today

US$ 95.80US$ 27
YES, I WANT SIGN ELECTRICIAN 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 Sign Electrician 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 installed signs for years but never had my own license?

Yes. It skips what a wire is and goes straight to the rules, the numbers and the reasons behind what you already do, in Article 600 order.

Does it match my state's exam and NEC edition?

It's written against the 2023 NEC (NFPA 70): Article 600 plus the related articles 100, 110, 210, 220, 250, 300, 725 and the Chapter 9 tables. Texas (TDLR, PSI exam), Washington L&I (04 Signs) and other states each adopt an NEC edition, and that can change. Before you study, check your state's adopted edition and your exam's candidate bulletin.

Is this official material?

No. It's an independent illustrated study guide. It isn't published or endorsed by NFPA, TDLR, PSI, Washington L&I or any licensing board.

Does it replace my training or apprenticeship?

No. It's study material. It doesn't give you a certificate, a license or continuing education hours, and it doesn't replace your apprenticeship hours, your employer's safety training, OSHA rules or the codebook you bring to the exam.

Are the practice questions the real exam questions?

No. They're written for this book in the style of the exam. Each answer tells you which NEC section to look up.

When and how do I get it?

You get it as a PDF by email, sent to the address you enter at checkout.

Do I have to pay every month?

No. You pay once, and the book and the 2 bonus books are yours.

Can I have it on paper?

Yes. The PDF prints on regular letter paper, so you can keep it in the truck or at the shop.

How does the refund 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 sections that don't stick.

The sign disconnect: you see it drawn, and you've got it.

You walk into the exam knowing where each rule lives.

Drawings make studying faster.

The book is right below.

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

YES, I WANT SIGN ELECTRICIAN ILLUSTRATED FOR US$ 27

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