On Monday, 6 January 2020 07:29:52 UTC, Andy Burns wrote:
wrote:

So I definately need a pin hole bigger than 2.1mm.

As I said the other day, a 2.1mm centre hole won't allow the plug into
the socket.

The next 'standard' is 2.5mm

https://www.rapidonline.com/truconne...on-leads-63536

I'd always though 2.1 was up to 3amps and the 2.5 for 5 amps.