Those Tapo plugs are ok. the problem with a clamp type amp meter that electricians might use is you need to clamp it round the line (live) wire on it's own. If you clamp it round a cable with all three wires in the neutral carrying return current changes the reading.
Figured asking here might be more appropriate as there are more electricals inclined people here;
Any recommendations for a kill a wat style device?
Trying to get a handle on any devices that might be drawing more power than anticipated. Ideally something available from not-Amazon ™