how do I change door bell transformer to fuse box?
Answers:
the question doesn't make sense
Do you have a battery doorbell at the moment
or do you have a transformer doorbell at the moment, and what do you want to change to what.
Battery is DC
Transformer is AC (unless you also have a rectifier block)
So a doorbell designed for one, will not normally work on the other.
Other answers:
turn off the breaker. unhook the wires from the old one and put them in the exact same place on the new transformer.
turn off the breaker. unhook the wires from the old one and put them in the exact same place on the new transformer.