I want to fuse the primary side of a 120vac to 12vac (300 mA) step down transformer ... the fuse will be first in the circuit (before an on / off switch) on the hot wire. A three pronged grounded plug (metal case / transformer / switch to be grounded) from the ac main will be used. Could anyone tell me what rating of fuse should be used?
Thanks for helping on this.
Thanks for helping on this.