## Answer

Mar 01, 2024 - 07:05 AM

The output is 70 amps at nominal 12 volts and so the input will be 35 amps at nominal 24 volts. This is governed by the law Watts=Volts x Amps. Power in equals power out (less a bit for ineffeciency) so if we double the volts we halve the amps and vice versa.

This unit would be expected to carry 70 amps on its 12 volt side but to prevent nuisance blowing I would suggest a 100 amp fuse. On the 24 volt side I would suggest a 50 amp fuse. You can consult the Ampacity Tables to give you the minimum allowed wire size. In DC systems it is normal to use a wire bigger than the minimum because of voltage drop.

This unit would be expected to carry 70 amps on its 12 volt side but to prevent nuisance blowing I would suggest a 100 amp fuse. On the 24 volt side I would suggest a 50 amp fuse. You can consult the Ampacity Tables to give you the minimum allowed wire size. In DC systems it is normal to use a wire bigger than the minimum because of voltage drop.