I just ordered few ACS724 current sensors. I would like to measure the energy consumption in my garage. I am concerned about how to attach my main electricity power cable (AWG 12 : diameter: 2mm ) to the ACS724. I found the following picture in the internet:
I'd crimp the wires then solder them.
AWG - American Wire Gauge Current Ratings (engineeringtoolbox.com)
Looks like you'll need 14g wire to be able to handle 20 amps.
The ring connectors are rated to 30 Amps.
14AWG is rated to 15 Amps.
12AWG is rated to 20 Amps.
Crimp, but don't solder. Proper crimping cold-welds the wires to the terminal body. Soldering just makes the joint brittle and easily broken with a little vibration.
If an electrical inspector sees a soldered crimp connection, it will fail the inspection.
I doubt that that circuit board is designed with the safety of 230volt mains voltage in mind.
IIRC 4Kvolt isolation is required for that.
Board seems great for low-voltage stuff, but I would use a (clip-on) current transformer to measure mains current.
Leo..
I would not use this board for a number of reasons.
First, it is a demo breakout board and shouldn't be used in a final product.
Second, you have to make an electrical connection to your power line to the garage- probably at the circuit breaker panel. In most places, this would be illegal or at best inadvisable. And highly dangerous if you don't know what you are doing.
As Leo said- use a clip-on current transformer. This way you don't have to touch the live wires at all. Much safer.
Thank you All for your comments that confirmed my doubts. I will use an SCT013 module.
Or similar. This was just an example. Pick one that matches the circuit you are trying to measure. The breaker size should be a guide.
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