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Voltage measurement

I was hoping to improve power calculations with actual voltage readings so I enabled MQTT voltage topic but it stays at 240 all the time regardless. Further investigating suggests that more hardware is needed to measure voltage although this info comes from old threads and comments so might be out of date. 


So, my question is: does the V5.5 board have voltage measurement or not ?


Thanks,

2 CommentsSorted by Oldest First

Voltage measurement can be imported from an external energy monitoring device or Home Automation system via MQTT. OpenEVSE does measure current but does not have any voltage measurement. If no external source is available 240 volts is assumed if the station is set to Level 2 and 120v is assumed if set to Level 1.

Thanks for the reply. I've got a Carlo Galvazzi meter on my incoming supply, hopefully I can get that to give up voltage information.

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