The US Electrician's/Homeowners Fault Finding Bible
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Whether You're A Qualified Electrician Or A Homeowner Who Wants To Stop Being In The Dark, This Guide Is For You.
Perfect For Seasoned Tradesmen, Apprentices And Homeowners.
Save Money As A Homeowner $35.99 One Time Charge VS $100 Electricians Callout Fee
Who Is This Guide For
Who is this guide for?
This guide is primarily written for US electricians, apprentice to approved but it's equally useful for homeowners who want to understand their electrical system, identify what's gone wrong, and know how to fix it
How It Works
Once you purchase, you’ll get instant access to the Fault Finding Guide, designed specifically for electricians working in the field across the US. You can use it on your phone, tablet, or printed out on the job.
Our Guarantee
We stand behind this guide and the value it delivers in the field. Try it on real jobs and put it into practice on your next fault-finding call-outs. If you go through the system and don’t feel it helps you diagnose issues faster and with more confidence, we’ll give you a full refund within 7 days of purchase. This is a practical tool built for working electricians, so it’s only fair that it proves itself on the job.
Stop guessing. Start diagnosing.
Every electrician has been there — standing in front of a fault with a customer watching, time ticking, and no clear starting point. This guide changes that. Whether you're an apprentice on your first job or a master electrician who just wants a reliable reference on the truck, the General Electrical Fault Finding Guide gives you a clear, confident process for finding and fixing electrical faults fast.
No waffle. No textbook theory. Just practical, structured diagnostic flowcharts and fault tables built the way electricians actually think — symptom first, cause second, fix third.
What's inside:
Step-by-step diagnostic flowcharts, fault tables covering the most common electrical problems, and quick-reference NEC code articles — all in one professionally formatted PDF you can save to your phone, tablet, or laptop and pull up anywhere on the job.
From a dead outlet to a nuisance-tripping GFCI, from a flickering LED circuit to a lost neutral, every major fault type is covered with a clear process to follow, written for real-world site conditions, not a classroom.
Designed specifically for US electricians, every reference in this guide is built around NEC standards, US wire colour codes, 120/240V systems, and GFCI/AFCI requirements. Nothing from the UK, nothing from Europe — just the standards you actually work to every day.
What's covered: No power & dead circuits · Tripping breakers & blown fuses · GFCI & AFCI faults · Outlet & receptacle issues · Lighting faults · Motor & appliance diagnosis · Voltage & power quality problems · Test equipment guide · NEC code reference
Who is it for?
This guide works for every level. Apprentices will use it to build confidence and understand the diagnostic process. Journeymen will use it as a fast on-site reference. Experienced master electricians will keep it on the truck for those head-scratching intermittent faults that waste hours without a clear process to follow.
If you work in the US — residential, commercial, or light industrial — this guide will save you time on every job it's used on. At this price, it pays for itself the first time you use it.
Homeowners — Important: What you are and are not permitted to do
If you are a homeowner or non-licensed individual, this guide is provided for informational purposes only. Electrical work in the United States is regulated at the state and local level and requirements vary significantly by jurisdiction. Always verify with your local building department and AHJ before starting any electrical work.
Instant digital download. Works on any device. Use it on site from day one.
Terms and Conditions
This guide is for educational and informational purposes only. It is intended to support licensed electricians and qualified tradespeople as a practical diagnostic reference tool. By purchasing this guide you confirm that you have read, understood, and agree to these terms in full.
For licensed electricians and trade professionals: This guide is a diagnostic reference for use by qualified persons. It does not replace the National Electrical Code (NEC/NFPA 70), NFPA 70E, OSHA 29 CFR 1910 Subpart S, or applicable state and local electrical codes. Always verify all code references against the edition adopted by your local Authority Having Jurisdiction (AHJ). Some jurisdictions have adopted NEC 2017 or earlier — confirm before proceeding. Local amendments may impose requirements beyond those described in this guide.
Licensing requirements: Most states require electrical work beyond simple like-for-like repairs and replacements to be performed by or under the direct supervision of a licensed electrical contractor or journeyman electrician. Many states allow homeowners to perform certain electrical work on their own primary residence only — this exemption does not typically extend to rental properties, commercial premises, or work performed for compensation. Performing unlicensed electrical work where a license is required is a misdemeanor or civil violation in most jurisdictions and can result in fines, stop-work orders, and mandatory removal and remediation of the work at your expense.
Permits and inspections: Nearly all new circuits, panel replacements, service upgrades, and significant electrical modifications require a permit from your local building department and a subsequent inspection by a code enforcement official. Performing this work without a permit can result in fines, forced removal of completed work, difficulty selling your home, and denial of insurance claims for fire or property damage arising from the unpermitted work. Always check with your local building department before starting any electrical project.
What homeowners can typically do without a permit (varies by jurisdiction): replacing like-for-like outlets, switches, and light fixtures on existing circuits; replacing a single circuit breaker with an identical unit. This is not a complete or legally binding list — confirm with your local AHJ before proceeding.
What always requires a licensed electrician and permit: service entrance upgrades, new sub-panels, any new circuits, EV charging station installation (NEC Article 625), solar PV and battery storage systems (NEC Articles 705 and 706), hot tub and pool wiring (NEC Article 680), whole-house generator connections and transfer switches (NEC Article 702), and any electrical work in commercial premises or rental properties.
When to call a licensed electrician immediately: If you experience burning smells, scorch marks, sparking, repeated breaker trips, flickering lights across multiple circuits, or any situation involving the main panel or service entrance — stop, do not touch anything, and call a licensed electrician. In an emergency, call 911.
Insurance: Homeowner's insurance policies typically exclude or limit coverage for fire, property damage, or personal injury caused by electrical work not performed by a licensed contractor or not permitted and inspected where required. Consult your insurer before undertaking any electrical work beyond minor repairs.
State-specific requirements: States including California, New York, Texas, Florida, Illinois, and Massachusetts impose additional licensing, permitting, and energy code requirements beyond the NEC. Always confirm requirements with your state's electrical licensing board and local AHJ. A licensed electrician can be found via: neca.org · ibew.org · angi.com · homeadvisor.com
Limitation of Liability
Tradesman's Mate and its affiliates, officers, authors, editors, and distributors accept no liability whatsoever for injury, death, property damage, insurance denial, regulatory penalty, or any other loss or harm arising from: (1) use of this guide by unlicensed or unqualified persons to perform electrical work; (2) reliance on this guide in place of consulting a licensed electrician or AHJ; (3) failure to obtain required permits, inspections, or approvals; (4) errors, omissions, or inaccuracies in this guide; (5) application of this guide in jurisdictions where requirements differ from those described; or (6) changes in applicable codes or regulations after publication.
This guide does not constitute legal, professional, or engineering advice. If you are uncertain whether a situation is safe or whether work requires a licensed electrician — assume it does.
By purchasing this guide you confirm that you have read, understood, and agree to these terms in full.