@TinMan3rail, it has been shown many times by knowledgeable experts on this forum and elsewhere that adding a 3 prong plug and grounding classic Lionel transformers is just outright WRONG and not proper way to achieve safety. I get it, sure, to the layman, it seems like adding a 3rd prong and grounding things is the right thing to do, but then look around, what other train transformers, even current production ones have a ground? See https://ogrforum.ogaugerr.com/...y=148675927400293147
Furthermore, the current modern UL specifications for Toy Transformers in section 16 of specification 697 state that the cord, plug and unit should NOT be grounded, at least 18 gauge in size, between 5 and 10 ft long and not detachable from the transformer. I can't directly quote the source because it is copyrighted, but you can purchase your own copy: https://standardscatalog.ul.co...aspx?productId=UL697 Also, lets remember, that Lionel classic transformers were UL listed when appropriate.
The correct way to achieve the safety you purport to sell is as simple as using the correct unpolarized plug and introducing an upstream GFI. This can be done by installing a GFI wall outlet, or using a device like this: https://www.amazon.com/TRC-Sou...4637550-2400668?th=1
I think much could be forgiven if you decided to have the GFI built into your cord, maybe something like this: https://www.amazon.com/Replace...tioner/dp/B077FV6RQT However, you still should NOT ground the transformer case.
Now, let's not derail this topic any further as the initial intent is to see what plug end moldings were used with what and when with the possibility of creating proper reproduction plugs for use with classic transformer restorations and refurbishments.
