Can a 15/16 volt old transformer of 40 to 100 watts cause a fire ? For how many years does the UL seal apply ?
I just looked at about 15 transformers in my current inventory. All Marx transformers (729 in photo), prewar and postwar, have the UL seal.
None of my Lionel transformers have the UL seal, from the oldest, a cast iron type K to my newest, the RW. Of the American Flyer, a prewar 75w 1250 has an older format UL seal.
A postwar 22004 has UL formed into the bottom plate, but a 15B has no sign of UL, nor does a 1289.
