New Member
Posts: 26
Registered: ‎05-11-2009

mfi current sensor for the whole house

Hello, i'm thinking about using mfi current sensor to monitor the power consumtion of the whole house. Connecting the clamps to to the main current cables coming into the house.
The idea is to use mfi like this device:
openenergymonitor.org/emon/

But reading the documentation i've found this:

AC Current Measurement
The mFi Current Sensor measures the AC current flowing in the circuit, not the power. Note: Power is voltage multiplied by current. The mFi Current Sensor measures only the current (up to 100A maximum), and not the voltage. The result indicates non-TrueRMS (Root Mean Square) current in amps, which may require additional analysis for non-linear loads, such as switching power supplies.

So now i'm not sure if mfi will give me the data i want, which in the end
is only the total house kwh consumption.

Thanks
Regular Member
Posts: 374
Registered: ‎08-20-2012
Kudos: 58

Re: mfi current sensor for the whole house

The current Current Sensors will not fit around the wire feeding the house.
SuperUser
Posts: 21,761
Registered: ‎11-20-2011
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Solutions: 233

Re: mfi current sensor for the whole house

The current Current Sensors will not fit around the wire feeding the house.


Probably can't read the amp. draw of all of his stuff either.


isp builder | linux sorcerer | datacenter automation conjurer | blog: blog.engineered.online
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SuperUser
Posts: 42,794
Registered: ‎06-23-2009
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Re: mfi current sensor for the whole house

Your major issue is that these current sensors
are not UL approved for installation in a distribution
panel, and definitely won't meet NFPA standards.

In other words, it's not safe to use them in this
application. Dave

> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
Regular Member
Posts: 675
Registered: ‎08-10-2011
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Solutions: 10

Re: mfi current sensor for the whole house

Now I'm usually on the ubnt side on most things, but your looking for something like this..

www.powerhousedynamics.com/

I have a few here at home an 90% or more of our clients have them too...

Do exactly what you want...no fuss...

Bret

P.s. I don't work for either ubnt oe powerhouse dynamics
I didn't do it!
New Member
Posts: 26
Registered: ‎05-11-2009

Re: mfi current sensor for the whole house

Thanks to all for the information.
Highlighted
Regular Member
Posts: 553
Registered: ‎06-28-2011
Kudos: 68

Re: mfi current sensor for the whole house

Now I'm usually on the ubnt side on most things, but your looking for something like this..

www.powerhousedynamics.com/

Thanks for sharing that - I've been eyeballing the new product from Brultech but they're 18 months past when they intended to start shipping, so I've stopped holding my breath.

The only thing I'm not sure I like about that one is that it costs a bit more and requires their software... but it looks like it may be a bit more polished.