13A sockets for EVs

[NozSpark]

"Correct, he cant use resistors to reduce the charge rate either which is my point"

How the heck would anyone think you could use resistors to change the amount of current something consumes??

john..

You can,,, the resistors are there to tell the charger what the lead is capable of carrying and will adjust the load accordingly...

You can get 16A 1ph, 16A 3ph, 32A 1ph and 32A 3ph leads.... they all use the same plugs and sockets so there has to be a way to control it

 

[johnb2713]

You can,,, the resistors are there to tell the charger what the lead is capable of carrying and will adjust the load accordingly...

You can get 16A 1ph, 16A 3ph, 32A 1ph and 32A 3ph leads.... they all use the same plugs and sockets so there has to be a way to control it

Correct BUT the inference was made that adjusting the resistors could reduce the current to intermediate levels which it doesnt. See posts #51 and #55. The resistor in the plug will let you set the maximum current to be 13A, 20A, 32A or 70A.

 

[King Arthur]

"Correct, he cant use resistors to reduce the charge rate either which is my point"

How the heck would anyone think you could use resistors to change the amount of current something consumes??

john..

The resistors are used for 'signalling', they are not actually in the charging circuit itself. It's a widely used technique for configuring the connection between all manner of devices when there are many variations. The USB standard, for example, does something very similar.

 

[johnb2713]

The resistors are used for 'signalling', they are not actually in the charging circuit itself. It's a widely used technique for configuring the connection between all manner of devices when there are many variations. The USB standard, for example, does something very similar.

In the case of wallboxes and granny chargers the control of the charging process is handled via the pilot line. Different duty cycles of a 1 KHz squarewave sets the maximum charge current, pulling the voltage down to different levels sets different modes.