Unfortunately, the information available on older ERG inverter series E is limited, but here are some suggestions on how you might find what you're looking for:

1. Check the ERG website:

• Product datasheets: ERG has a library of product datasheets on their website. While they may not have everything listed, you can try searching for "series E" or the specific model number you have. You can find the datasheet library here: https://ergpower.com/
• Discontinued products: ERG also has a page for discontinued products, which may include your inverter series. You can find it here: https://ergpower.com/

2. Contact ERG directly:

• ERG has a customer service team that may be able to help you find information on older products. You can contact them by phone at 800-215-5866 or 607-754-9187, or by email at sales@ergpower.com.

3. Search online forums:

• There are several online forums where electronics hobbyists and professionals discuss different types of inverters. You can try searching for your specific inverter model or series on these forums to see if anyone has any information or resources to share.

4. Look for alternative sources:

• If you're unable to find any information from ERG directly, you may be able to find information from other sources, such as:
  • Third-party distributors: Some third-party distributors may still have older ERG inverters in stock, and they may have access to product manuals or specifications.
  • Online communities: There are online communities dedicated to electronics repair and restoration. You could try posting about your inverter in one of these communities to see if anyone can help you find information.

Additional tips:

• When searching for information online, be sure to include the specific model number of your inverter, as well as any other relevant information such as the input voltage and output voltage.
• If you're having trouble finding information, you can try rephrasing your search query or using different keywords.

I hope this helps!