This may seem like a dumb question but if you connect different size transformers in parallel to divide the load what keeps the smaller transformers from being overloaded?

Lets say you have a 1000 amps of load and 4 transformers feeding it, three transformers rated 300 amps one transformer rated 100 amps.

In the above example I would expect the 100 amp transformer to release smoke as it will be loaded to approximately 250 amps.

How does this work?

Confused, Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts