Question: If connecting a Sense to a 400a service like this, is there any danger of damaging the Sense unit? (I understand that it might not work properly as it might clip the inputs)
I have a friend with a house (lodge) that is at the end of the end of the power grid in the middle of nowhere. He has a 400a electrical service and is having issues with devices (electronics and such) dying. I was hoping to get him a Sense in order to monitor power quality to try to diagnose this remotely since the house is a vacation home and not occupied all the time.
I think the issue is either that their transformer is too small (25kW even though he has a single instant water heater that is 38.5kW) or that power quality at the end of the line is so horrible that they get regular spikes/surges/undervoltages.
I will have to get the utility to allow access to the metering cabinet in order to get the CT’s around it so I wanted to understand what the ramifications would be of putting a Sense on it. If the data was just inaccurate at high loads that would be one thing, but if it damages the device that is a different story.
Obviously the voltage monitoring would work which is fantastic (though seriously - can I have a graph of voltage per phase leg pretty please!!!)
This is the main service panel I am working with. No good way to get a single set of CT’s over the entire feed without getting into the metering cabinet. Sense really needs a solution for these 400/320a services.