Shelly’s lineup is difficult to navigate – can you help me choose the appropriate products?
I have an electrician coming soon, which gives me the opportunity to install a couple of Shelly Pro devices in the electrical panel. I just want to measure, not control anything. And I want to do it with as few Shelly units as possible.
I would like to measure:
Heat pump, 3-phase 16A (heat pump + electric heater)
Oven, 1-phase 16A
Cooktop, 1-phase 16A
Cooktop, 1-phase 16A
Dishwasher, 1-phase 10A
Ventilation unit, 1-phase 10A
I gather that a Shelly Pro 3EM should work for the heat pump. But what can I use to capture all the single-phase loads without filling up the whole panel?
I went for a Shelly Pro EM in a small din box next to my consumer unit to measure 2 circuits without filling the main panel.
Also for the dishwasher/ventilation unit how about these? They’re new and I’ve not tried them yet but you can put the in the back of the outlet near the appliance with no worry about them accidentally being turned off.
What is the reason to measure each device separatelly? From my experience, central home measurement is enough to have home consumption under controll. Oherwise:
Oven, 1-phase 16A - Shelly 3EM and you can use other clamps to monitor other devices (e.g. cooktop)
Cooktop, 1-phase 16A
Cooktop, 1-phase 16A
Dishwasher, 1-phase 10A - Shelly Plus 1PM or Pro 1PM (set to be always on)
Ventilation unit, 1-phase 10A - same as above.
Depending on your electric installation you can use one shelly device to monitor 2 circuits with limited load use - shelly plus 2pm. But if you dont want to controll those devices, clamps metering is the best and secure way.
As @Igy pointed out, you can actually use the 3EM Pro to monitor three 1-phase circuits instead of a 3-phase circuit. I have a 3EM pro in my house that measures the main grid supply on one CT clamp, then two other circuits on the other two clamps.