Chapter 13 Further Reading
Books
1. Wiring a House (For Pros By Pros) — Rex Cauldwell Chapters specifically covering panels, load calculations, and service entry are the most directly applicable to this chapter. Cauldwell walks through panel selection, service sizing, and circuit organization with practical depth that goes beyond most homeowner guides. His discussion of the main bonding jumper and grounding requirements in sub-panels is particularly clear. Taunton Press, 5th edition.
2. Electrical Inspection of Existing Dwellings — Douglas Hansen This book is written from the perspective of an electrical inspector — which makes it exceptionally useful for homeowners who want to understand what inspectors look for when they open a panel. Hansen's systematic approach to panel inspection covers visible defects, code deficiencies, and the distinction between hazardous conditions and minor code departures. Not a DIY guide, but invaluable for understanding what's worth worrying about in an older panel. Available through International Association of Electrical Inspectors.
Online Resources
3. CPSC Consumer Product Safety Commission — Federal Pacific and Zinsco Panel Safety Information cpsc.gov (search "Federal Pacific Electric" and "Zinsco")
The CPSC has published consumer safety information on Federal Pacific Stab-Lok panels and Zinsco/Sylvania panels. The documentation includes the history of the issue, the nature of the failure mode, and recommendations for homeowners. This is the authoritative source for understanding the specific safety concerns with these panels. Free.
4. NFPA 70 National Electrical Code — Article 220: Branch Circuit, Feeder, and Service Load Calculations nfpa.org/NEC
Article 220 is the NEC section governing load calculations for residential and commercial electrical services. The standard method (220.82 for single-family dwellings) and the optional method (220.83) are both presented. This chapter's simplified calculation is based on the standard method. Reading the actual NEC text alongside this chapter deepens your understanding of what the simplified calculation is approximating. Free to read online with registration.
5. Electrical Safety Foundation International — Electrical Panel Safety esfi.org
ESFI publishes homeowner-oriented safety guidance on electrical panels, including how to inspect panels visually, what warning signs indicate hazards, and guidance on when to call an electrician. Their "Home Electrical Safety" checklist is a practical tool for the kind of panel observation described in this chapter. Free.
6. Your State's Adopted Electrical Code Search "[your state] adopted electrical code" or visit your state's building division website.
Each state adopts the NEC with local amendments and updates at different intervals. Some states are on the 2023 NEC; others are still on the 2017 or 2020 edition. The AFCI requirements that apply to your jurisdiction depend on which NEC edition your state has adopted — requirements have expanded significantly between the 2008 and 2023 editions. Knowing which edition applies in your jurisdiction helps you understand what's required for new work. Free, at state and local government websites.
Tools and Products
7. Circuit Breaker Finder — Klein Tools, Sperry Instruments, or similar Available at hardware stores and online, $20–$60.
A circuit breaker finder consists of a transmitter that plugs into an outlet and a receiver that identifies which breaker controls it. Dramatically speeds up the panel mapping exercise. If your panel has many unlabeled circuits, this tool earns its cost immediately. Klein Tools (model CB100) and Sperry Instruments (CS61200) are both well-regarded options. Strongly recommended for the panel mapping exercise in Chapter 13.
8. Non-Contact Voltage Tester — Klein Tools, Fluke, or similar Available at hardware stores, $15–$50.
Covered in Chapter 12 and essential for all electrical work. The Klein Tools NCVT-1 (~$20) and the Fluke 1AC-A1-II (~$25) are both reliable, well-reviewed options appropriate for homeowner use. For added safety, choose a tester with a self-test function that confirms the tester itself is operational before relying on a "no voltage" reading. Every homeowner should own one.
9. Outlet Tester with AFCI Detection — Southwire or Klein Tools Available at hardware stores, $15–$30.
Standard outlet testers (three-light type) confirm polarity and ground. More advanced testers include a button that can trigger AFCI breakers to test their responsiveness, and some can detect open grounds, reversed polarity, and open neutrals with more granular feedback. For the panel mapping exercise, the basic three-light tester is sufficient. Recommended purchase for homeowners.
Professional Resources
10. National Electrical Contractors Association (NECA) — "Find a Contractor" tool necanet.org
NECA members are licensed electrical contractors who have agreed to professional standards. When searching for an electrician for a panel upgrade or service work, NECA membership is one indicator (alongside state licensing and verifiable reviews) that you're working with a professional contractor. The "find a contractor" tool searches by zip code. Free.
11. International Association of Electrical Inspectors (IAEI) — Code Questions iaei.org
The IAEI is the professional association for electrical inspectors and the authoritative source for code interpretation questions. Their website includes code-related articles and, for members, direct code interpretation support. If you have a specific question about what the NEC requires in your situation — for example, whether AFCI is required on a specific circuit in your jurisdiction — your local building department's electrical inspector is the most direct source, and IAEI resources provide background context. Some free content; full access requires membership.
12. Energy Star Most Efficient — Heating and Cooling energystar.gov/products/most_efficient
Relevant to the panel chapter because heat pumps and mini-splits are among the most significant new electrical loads homeowners add today, often triggering the service upgrade discussion. Energy Star's Most Efficient list identifies the top-performing heat pump systems. Understanding the electrical specifications (amperage, kVA) of the heat pump systems you're considering is an input to the load calculation before you commit to a service upgrade size. Free.