Steven,
It's refreshing to read that someone has their wife well trained and obviously concerned about providing for your needs
The gas grill does o.k. but you sometimes need to turn the bread around to stop it getting burnt in the centre. Any normal household kitchen toaster seems to do, they don't appear to have the high wattage of a kettle.
With any mains electrical appliance somewhere on the appliance or the instructions it will tell you how much power it draws. You will find you get into the habit of checking that. Kettles are amongst the highest. Watch out for irons as well if your wife plans to keep you looking smart as well as feeding you. Some of them are on the high side, 2000w in some cases.
Relax and enjoy.
Robert