You're on the right track! Using older NEC codebooks is a great way to illustrate how codes evolve and change over time. Here's a breakdown of places you can try to find older NEC codebooks, along with some tips and considerations

1. Online Marketplaces and Auction Sites:
eBay

This is often a good source for used codebooks. Search for "NEC [Year] Codebook" (e.g., "NEC 2014 Codebook"). Be sure to check the condition of the book in the listing description and look at pictures.

Amazon

While they primarily sell new books, check their marketplace for used copies.

Abebooks

Specializes in used and rare books. You might find older NEC editions here.

Facebook Marketplace

You never know! Worth a quick search in your local area.

Tips for Online Marketplaces



Filter by Price and Condition

Set a budget and look for books in "Good" or "Very Good" condition to ensure readability.

Shipping Costs

Factor in the cost of shipping when comparing prices. Codebooks can be heavy.

Ask Questions

If the listing is unclear, don't hesitate to contact the seller with specific questions about the book's condition or if it has any markings.

2. Libraries and Educational Institutions



Your School Library

See if your school library has archived copies of older NEC codebooks. Many libraries keep older editions for historical reference.

Local Public Libraries

They might have older editions that they've withdrawn from circulation. It's worth checking, especially larger city libraries.

Technical Colleges and Trade Schools

Other technical colleges or trade schools in your area may have old copies they're willing to donate or sell at a reduced price. Contact their electrical departments.

University Libraries

Universities with engineering or architecture programs might have extensive collections of codebooks.

3. Professional Organizations



Local Chapters of the International Association of Electrical Inspectors (IAEI)

IAEI members often have older codebooks. Contacting your local chapter and explaining your need for educational purposes might yield positive results.

Independent Electrical Contractors (IEC) Chapters

Similar to IAEI, IEC chapters may have members willing to donate or sell older codes.

Local Electrical Unions (IBEW)

Contact your local IBEW training center. They might have resources available for educational purposes.

4. Donations and Networking



Reach Out to Electricians in Your Community

Ask if any local electricians have old codebooks they're willing to donate to your classroom. Word-of-mouth can be surprisingly effective.

Post on Social Media

A post on your personal or school's social media page asking for donations of old NEC codebooks might reach people who have them sitting around.

Online Forums and Communities

Look for online forums or communities related to electrical work or construction. You can post a request there.

5. Considerations When Choosing a Codebook



Year

Decide what specific years you want to compare. A good approach is to pick a few codebooks that are 5-10 years apart to show meaningful changes.

Condition

As mentioned above, try to get books in good condition, but understand that older books will likely have some wear and tear.

Cost

Set a budget. Older editions should be relatively inexpensive, but prices can vary depending on the year and condition.

Purpose

Think about the specific topics or code changes you want to illustrate. This will help you choose the most relevant years to focus on.

Legibility

Ensure the text and diagrams are clear and readable.

Important Teaching Tips and Suggestions for Using Older Codebooks



Highlight Specific Changes

Don't just present a stack of codebooks. Focus on specific sections and changes that have occurred over time.

Real-World Examples

Use real-world examples to illustrate how code changes impact electrical installations.

Discuss the Reasoning Behind Changes

Explain why the codes have been updated. This helps students understand the importance of staying current with the NEC. Consider things like:

New Technologies

How new technologies (like solar panels, LEDs, electric vehicle chargers) have driven code updates.

Safety Concerns

Code changes that address emerging safety hazards or improve existing safety measures.

Efficiency

Updates related to energy efficiency and sustainability.

Focus on Key Concepts

Even though the codes may differ, emphasize the fundamental principles of electrical safety and wiring practices that remain consistent.

Comparison Charts

Create comparison charts that highlight the differences between code editions. This can be a helpful visual aid.

Case Studies

Use case studies or scenarios that involve applying different versions of the code to the same situation. This can help students understand the practical implications of code changes.

Use the Current Code as the Primary Reference

Always emphasize that students must use the current, adopted version of the NEC for all actual electrical work. The older codes are for illustrative and educational purposes only.*

"Grandfathering" Briefly explain the concept of "grandfathering," where installations done under a previous code might be allowed to remain as is, even if the current code requires something different (but stress this doesn't always apply, especially if there are safety concerns).By using older NEC codebooks effectively, you can provide your students with a valuable understanding of how electrical codes evolve, the reasons behind the changes, and the importance of staying up-to-date with the latest requirements. Good luck! Flag for review