Simple answer..NO.
The voltage of the supply and the appliance must be matched to avoid malfunction.
Overhead wires on the railways are 250v
Divide the watts by the voltage to get current (amps). 60W / 250V = about 1/4 Amp.
250v On an automotive battery it is 2.2V
No, the voltage rating should not be exceeded. However, you could use a 250v 10a fuse for a 125v 10a fuse.
Its a bit on the high side, as measured between L1 and L2, but not a problem. Better for appliances than a low voltage. Lights will tend to be a just bit brighter and use a bit above rated power. Certainly a big problem if measured between either live conductors and the neutral.
read the label on your charger if it says 90v to 250V it will be ok it it says 120V it will not be ok
Yes. The 250 voltage is a not-to-exceed rating.
yes. the 250v just means that's the maximum voltage rating the fuse can handle .. so it can def handle 125v. just not vice versa.
Yes, fuses of a higher voltage can be used safely. What is not recommended is to use a lower voltage fuse on higher voltages.
nope
No, it is against the National Electrical Code to wire a receptacle with the wrong voltage. You should call a qualified electrician to change the 250V receptacle to a 125V receptacle.