We recommend consulting with an electrician before doing any electrical project. In most cases in Canada an electrician is required to do most types of electrical work, this includes installing plug-ins.
It is recommended that you consult with an electrician before doing any electrical project. In electrical fuse boxes the amperage allowance of the fuse is matched to the gauge of the wiring.
For the 32/40 Amp charger, an electrician would probably recommend at least a 40/50 Amp fuse as well as the proper gauge of wiring to be used for the circuits.