Proper kettle leads can take higher temperatures and have a little cutout. Ordinary ones without the cutout won't fit into things like kettles, ovens and fryers that get hot.
But you can fit the high temperature ones in ordinary low-temperature goods.
Not a lot of people know that.
From wikipedia:
C13
C14
14 (H)
4 (V)
Yes
I
Yes
10
70
Very common on personal computers and peripherals. Commonly but incorrectly referred to as a "kettle cord", but kettles actually require the C15/C16.
C15
C16
14 (H)
4 (V)
Yes
I
Yes
10
120
For use in high-temperature settings (for example, electric kettle, computer networking closets). Also used in Cisco Catalyst series switches, Cisco MDS9500 series rack-mounted SAN switches,[15] HP Procurve switches, Dell PowerConnect switches and early Xbox 360 power supplies.
C15A
C16A
14 (H)
4 (V)
Yes
I
Yes
10
155
For use in very-high-temperature settings, such as some stage lighting instruments. Similar to C15/C16, but the top is narrowed to exclude the C15 cord connector.