Normal
It all depends on the amount of current the cooker requires. If it just for the ignitor, then a socket outlet is find. However, if it for an electric oven or something that requires a high current. A spur unit is best. As a socket outlet will tend to overheat the sockets pins causing a bad connection over time. And since the plug will not be removed on a regular bases (i.e. because behind cooker). You are very unlikely to notice the overheating before it causes a fire in the future. It best to go with the manufactures recommend.
