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Ground Central 2 - Automation & Monitoring

Overview

Section titled “Overview”

This document outlines the automation and power monitoring setup specific to Ground Central 2, enabling smart control and energy tracking for key circuits.

Hardware Approach:

  • Monitoring: KinCony N10 (10-channel CT clamp energy meter)
  • Control: Shelly 1/2 devices with 3D printed DIN rail mounts

Integration: ESPHome + Home Assistant for fully local control

Monitoring System - KinCony N10

Section titled “Monitoring System - KinCony N10”

Hardware Specs

Section titled “Hardware Specs”
  • 10 CT clamp inputs for current measurement
  • Built-in ZMPT101B voltage sensor (single phase reference)
  • Connectivity: WiFi (ESP32-S3)
  • Software: ESPHome (native Home Assistant integration)
  • Extras: SD card slot for local data logging
  • Form factor: Enclosed housing (clean installation)

Priority Circuits to Monitor

Section titled “Priority Circuits to Monitor”

From Ground Central 2 DIN rails:

  1. G2-13 - Fridge (health monitoring, detect failures)
  2. G2-21 - Dishwasher (cycle completion, energy stats)
  3. G2-31 - Washing machine (cycle completion, energy stats)
  4. G2-11 - Kitchen wall sockets Wall 1&2 (usage patterns)

From Ground Central 2 porcelain fuses: 5. G2A-3 - Mechanical ventilation (runtime tracking) 6. G2A-5 - Outdoor socket (car heater/EV charging cost) 7. G2B-5 - Heatpump circuit (major energy consumer) 8. G2B-1 or G2B-2 - Bathroom circuits (usage tracking)

Additional circuits (TBD): 9. Garage sockets 10. 🔧 [To be determined based on priorities]

CT Clamp Sizing

Section titled “CT Clamp Sizing”
  • 10A-16A circuits: 30A CT clamps
  • Heat pump, larger loads: 50A or 100A CT clamps
  • 🔧 [Specify exact sizing per circuit during installation]

Cost

Section titled “Cost”
  • KinCony N10 device: €95
  • 10x CT clamps @ €5 each: €50
  • Total: €145

Control Systems - Shelly Devices

Section titled “Control Systems - Shelly Devices”

1. Ventilation Control (G2A-3)

Section titled “1. Ventilation Control (G2A-3)”
  • Device: Shelly 1 or 2 (from existing stock)
  • Function: On/off control of mechanical ventilation
  • Trigger: Humidity sensor in bathroom (Zigbee/Z-Wave)
  • Logic:
    • Turn on when humidity > threshold (e.g., 70%)
    • Run for X minutes after shower/sauna
    • Manual override available

2. Outdoor Socket Control (G2A-5)

Section titled “2. Outdoor Socket Control (G2A-5)”
  • Device: Shelly 1 or 2 with contactor (16A rated)
  • Function: Scheduled power control
  • Use cases:
    • Car engine block heater (morning schedule)
    • EV Level 1 charging (cheap electricity hours)
  • Logic: Time-based + manual override

3. Outdoor Lighting (G2C-1/G2C-2)

Section titled “3. Outdoor Lighting (G2C-1/G2C-2)”
  • Device: Shelly 1 or 2 (replaces existing switch)
  • Function: Automatic lighting control
  • Logic:
    • Auto-on at sunset
    • Auto-off after X hours (e.g., 3 hours)
    • Manual override

Mounting

Section titled “Mounting”
  • 3D printed DIN rail adapters for Shelly devices
  • Mount on dedicated automation DIN rail in Ground Central 2

DIN Rail Layout

Section titled “DIN Rail Layout”

Dedicated Automation/Monitoring Rail:

  • KinCony N10 (in enclosure, mounted near DIN rail or on panel)
  • Shelly devices with 3D printed DIN mounts (2-3 modules each)
  • Optional: DIN rail contactor for outdoor socket (3-4 modules)
  • Estimated space: 15-20 modules → 20cm DIN rail

Location: Ground Central 2 panel

Integration

Section titled “Integration”

ESPHome Configuration

Section titled “ESPHome Configuration”
  • KinCony N10 configured via ESPHome
  • CT clamp entities exposed to Home Assistant
  • Power, current, voltage, energy (kWh) tracking per circuit

Home Assistant Automations

Section titled “Home Assistant Automations”

Examples (details in HA configuration):

  1. Humidity-triggered ventilation

    • When bathroom humidity > 70% → turn on ventilation
    • After 30 minutes OR humidity < 60% → turn off

  2. Smart car heater

    • Weekdays at 6:00 AM → turn on outdoor socket
    • After 2 hours → turn off

  3. EV charging schedule

    • Between 22:00-06:00 (cheap hours) → enable outdoor socket
    • Optional: integrate electricity price API

  4. Appliance notifications

    • When dishwasher/washing machine power drops (cycle complete) → notify

  5. Energy dashboards

    • Daily/weekly/monthly consumption per circuit
    • Cost tracking based on electricity rates

Bill of Materials

Section titled “Bill of Materials”
ItemQuantityUnit CostTotal
KinCony N101€95€95
CT clamps (30A-100A)10€5€50
Shelly 1/2 devices3Existing stock€0
3D printed DIN mounts3Filament cost~€5
DIN rail contactor (16A)1€20€20
20cm DIN rail1€5€5
Total~€175

Future Expansion

Section titled “Future Expansion”

Second KinCony N10

Section titled “Second KinCony N10”

If 10 channels prove insufficient:

  • Add second N10 for additional circuits
  • Monitor: Sauna heater, oven, additional sockets
  • Total 20 channels for comprehensive coverage

Additional Circuits to Consider

Section titled “Additional Circuits to Consider”
  • G2C-15/16/17 (3-phase oven)
  • G2A-10/11/12 (3-phase sauna heater)
  • Additional room socket circuits
  • Outdoor lighting circuits

Reference Documentation

Section titled “Reference Documentation”
Ground Central 2 Circuits Complete circuit table for this panel
Kitchen Electrical Handover Related kitchen electrical work

Notes

Section titled “Notes”
  • This setup is specific to Ground Central 2
  • Implementation details (wiring, ESPHome configs, HA automations) will be added during installation
  • CT clamps are non-invasive (clamp around phase wire, no circuit interruption)
  • Voltage reference wire connects to one phase for power calculation