What's the voltage?

I'm always looking to fill in more missing data and a question posted on RyPN yesterday about the voltage used by Reading MU cars made me check the database - and I realized that I didn't have any voltage listed for any of them. Oops. The rule I use is that voltage is assumed to be 600vDC unless otherwise stated, but the Reading used 11,000vAC. So the existing Reading MU cars - all 29 of them - now have the correct voltage noted.

Here's a piece of trivia for you: the highest voltage for any equipment on the list is 50,000 volts. What's odd is that there are two locomotives on the list designed for this voltage and, while they're in different countries and built for very different railroads, they're both numbered 6001 - the only two pieces of equipment on the list with that number. Black Mesa & Lake Powell 6001 is preserved in Arizona while BC Rail 6001 is preserved a thousand miles north in British Columbia. Odd.