Disable EV charger to avoid overloading

Configuration
21

The condition is stopping it. You just tuned off the input boolean so this will be false:

condition:
  condition: state
  entity_id: input_boolean.enable_evse # you have to create this helper, see below
  state: 'on'

The idea behind the input boolean is you turn it on to enable automatic control.

You turn it off to disable automatic control.

It was not meant to be a manual control. That still your switch.

So go back to this and use the two (switch and input boolean) that way:

alias: EVSE overload
description: ''
trigger:
  - platform: numeric_state
    entity_id: sensor.power
    above: '4000'
    id: 'off'
  - platform: numeric_state
    entity_id: sensor.power
    below: '800'
    id: 'on'
condition:
  condition: state
  entity_id: input_boolean.enable_evse # you have to create this helper, see below
  state: 'on'
action:
  - service: "switch.turn_{{ trigger.id }}"
    target:
      entity_id: switch.evse
mode: single

input_boolean:
  enable_evse:
    name: Enable EVSE Charging
    icon: mdi:car

Input boolean on = automatic control. Input boolean off = manual control.

switch.evse is your manual control when the input boolean is off.

22

I’d like to have only one toggle to manually swich the relay and also enable the automation (that have to control always the overloading).

23

I used two automations (+1 for the timer) and now seems that manual and overload control shoud work together:

automation:
alias: EVSE toggle
description: ''
trigger:
  - platform: state
    entity_id: input_boolean.toggle_ev
    to: 'on'
    id: 'on'
  - platform: state
    entity_id: input_boolean.toggle_ev
    to: 'off'
    id: 'off'
condition: []
action:
  - service: switch.turn_{{ trigger.id }}
    target:
      entity_id: switch.evse
mode: single

automation:
alias: EVSE overload
description: ''
trigger:
  - platform: numeric_state
    entity_id: sensor.power
    above: '4000'
    id: 'off'
  - platform: numeric_state
    entity_id: sensor.power
    below: '850'
    id: 'on'
condition:
  - condition: state
    entity_id: input_boolean.toggle_ev
    state: "on"
action:
  - service: switch.turn_{{ trigger.id }}
    target:
      entity_id: switch.evse
mode: single

automation:
alias: EVSE timer
description: ''
trigger:
  - platform: time
    at: '02:00'
    id: 'on'
  - platform: time
    at: '09:00'
    id: 'off'
condition: []
action:
  - service: homeassistant.turn_{{ trigger.id }}
    entity_id: input_boolean.toggle_ev
mode: single