Answers
Nov 23, 2018 - 07:51 PM
I would imagine that it makes it more tamper proof, plus it makes sense to not have to add another plug socket in the electric cabinet to power it.
Or it might be that it uses the mains electricity in the box to calculate energy uses from live and neutral.
Or it might be that it uses the mains electricity in the box to calculate energy uses from live and neutral.
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