Re: [mh] Whole home power monitoring

I think you are talking about the meter reading device you mentioned a couple posts back. I would look at the actual meter and your monitor at a specific time and again several hours later. See if you're looking at the same numbers with the decimal moved. A lot of those devices use W not KW. In fact Tasmota on the Sonoff S31 shows some history in W and others in KW.

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On May 24, 2021, 10:30 PM, at 10:30 PM, H Plato <[email protected]> wrote:
>Thanks Paul! I think the heater is around 3000w and the steam generator
>also 3000w. 
>
>Good to know about 100a on each phase. The electrician had to do some
>balancing when I installed an induction cooktop (50a), and a second AC
>(20a). 
>
>I can now read my meters and I’m charting the changes by minute.
>Hopefully by aggregating them by hour, I’ll have a better idea of
>usage. I think I have my uom wrong though. I don’t think it measures in
>kwh based on today’s values. From 9:37 to 1:52 the meter changed by
>1246, so maybe just watt-hours?
>
>05/24/21 09:37:41 AM [mqtt_emon]: Power changed 9853263 kwh
>05/24/21 09:38:12 AM [mqtt_emon]: Power changed 9853269 kwh
>05/24/21 09:38:42 AM [mqtt_emon]: Power changed 9853276 kwh
>
>[…]
>
>05/24/21 01:48:42 PM [mqtt_emon]: Power changed 9854489 kwh
>05/24/21 01:49:12 PM [mqtt_emon]: Power changed 9854492 kwh
>05/24/21 01:49:42 PM [mqtt_emon]: Power changed 9854494 kwh
>05/24/21 01:51:12 PM [mqtt_emon]: Power changed 9854503 kwh
>05/24/21 01:52:12 PM [mqtt_emon]: Power changed 9854509 kwh
>
>
>> On May 24, 2021, at 10:09 AM, Paul Onley <[email protected]> wrote:
>> 
>> You need to talk to your utility, in most cases a 100A service is not
>rated for 100A continuous. I had this issue a few years back when I
>installed an electric boiler. While I would have been below the 200A
>service I had I would have been over the 170A I was really allowed to
>use on some occasions. Your utility is the final authority on that. How
>much will the Heater and Steam generator draw?
>> 
>> Also with split phase it is important to measure the load on each
>phase, with a 100A service you have 100A @ 240V which is broken down as
>100A @ 120V times 2 in your panel. Depending on how well the builder
>did his load analysis and what changes have been made since, one phase
>may be more heavily loaded than the other.
>> 
>> As far as Power and Amps goes
>> 
>> Power = Voltage * Amps
>> 
>> or
>> 
>> Power / Voltage = Amps
>> 
>> 
>> 
>> On 5/23/21 5:52 PM, H Plato wrote:
>>> I’m looking to add 2 additional 240V circuits, one for an outdoor IR
>patio heater, and another for a steam generator. Having an idea of
>overall usage will give me an idea of power peaks and the general load.
>>> 
>>> I actually coded support for the sonoff power monitoring plug. I
>think I updated master. I also added in RRD support for any item so
>that they can be graphed in IA7.
>>> 
>>> The RTLAMR stuff is pretty neat if you have smart meters. I think I
>spent $20 on a USB Software defined radio adapter, and I can see my
>gas, water, and power meter updates in near real time. I think I’m
>going to pipe the output to a perl script that will take a matching ID
>and then send an update out via MQTT, unless anyone else has any ideas?
>>> 
>>> This is the output:
>>> 
>>> 30273954 is my water meter
>>> 45275915 is my gas meter
>>> 3442387 is my power meter
>>> 
>>> mh@s1:~# rtlamr -server=127.0.0.1:1432
>>> 16:38:54.987638 decode.go:45: CenterFreq: 912600155
>>> 16:38:55.046947 decode.go:46: SampleRate: 2359296
>>> 16:38:55.046964 decode.go:47: DataRate: 32768
>>> 16:38:55.046974 decode.go:48: ChipLength: 72
>>> 16:38:55.046985 decode.go:49: PreambleSymbols: 21
>>> 16:38:55.046995 decode.go:50: PreambleLength: 3024
>>> 16:38:55.047005 decode.go:51: PacketSymbols: 96
>>> 16:38:55.047015 decode.go:52: PacketLength: 13824
>>> 16:38:55.047028 decode.go:59: Protocols: scm
>>> 16:38:55.047038 decode.go:60: Preambles: 111110010101001100000
>>> 16:38:55.047049 main.go:124: GainCount: 29
>>> {Time:2021-05-23T16:38:58.575 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:39:12.963 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:39:19.966 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911664 CRC:0x162A}}
>>> {Time:2021-05-23T16:39:26.690 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:39:40.907 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:39:41.297 SCM:{ID: 3442387 Type: 5
>Tamper:{Phy:01 Enc:03} Consumption: 9848673 CRC:0xEDB3}}
>>> {Time:2021-05-23T16:39:43.745 SCM:{ID:45275962 Type:12
>Tamper:{Phy:02 Enc:00} Consumption:  138690 CRC:0xEE5E}}
>>> {Time:2021-05-23T16:39:54.578 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:40:01.964 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:40:03.968 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911664 CRC:0x162A}}
>>> {Time:2021-05-23T16:40:19.968 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911664 CRC:0x162A}}
>>> {Time:2021-05-23T16:40:29.523 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:40:41.300 SCM:{ID: 3442387 Type: 5
>Tamper:{Phy:01 Enc:03} Consumption: 9848686 CRC:0xEB81}}
>>> {Time:2021-05-23T16:40:57.748 SCM:{ID:45275962 Type:12
>Tamper:{Phy:02 Enc:00} Consumption:  138691 CRC:0x0CBC}}
>>> {Time:2021-05-23T16:41:11.302 SCM:{ID: 3442387 Type: 5
>Tamper:{Phy:01 Enc:03} Consumption: 9848692 CRC:0xDDC8}}
>>> {Time:2021-05-23T16:41:19.972 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911665 CRC:0xF4C8}}
>>> {Time:2021-05-23T16:41:32.640 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:41:33.973 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911665 CRC:0xF4C8}}
>>> {Time:2021-05-23T16:41:43.251 SCM:{ID:45275962 Type:12
>Tamper:{Phy:02 Enc:00} Consumption:  138691 CRC:0x0CBC}}
>>> {Time:2021-05-23T16:41:46.642 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:42:00.754 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:42:04.475 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911666 CRC:0xBC8D}}
>>> {Time:2021-05-23T16:42:11.805 SCM:{ID: 3442387 Type: 5
>Tamper:{Phy:01 Enc:03} Consumption: 9848704 CRC:0x84C5}}
>>> {Time:2021-05-23T16:42:27.753 SCM:{ID:45275962 Type:12
>Tamper:{Phy:02 Enc:00} Consumption:  138692 CRC:0x7ED4}}
>>> {Time:2021-05-23T16:42:42.920 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:42:56.531 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:43:04.979 SCM:{ID:45275915 Type:12
>Tamper:{Phy:00 Enc:00} Consumption:  911666 CRC:0xBC8D}}
>>> {Time:2021-05-23T16:43:10.308 SCM:{ID: 3442387 Type: 5
>Tamper:{Phy:01 Enc:03} Consumption: 9848716 CRC:0xCAB2}}
>>> {Time:2021-05-23T16:43:17.704 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:43:45.592 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> {Time:2021-05-23T16:43:59.979 SCM:{ID:30273954 Type:13
>Tamper:{Phy:00 Enc:00} Consumption:  224484 CRC:0x4873}}
>>> 
>>> 
>>>> On May 23, 2021, at 4:04 PM, Jeff Siddall via misterhouse-users
><[email protected]> wrote:
>>>> 
>>>> On 5/23/21 10:41 AM, H Plato wrote:
>>>>> Has anyone found any good DIY power monitoring solutions? My panel
>is full and I’d to get an idea of the average and peak load. I have a
>100a service, and the wiring from the utility isn’t sized for 200a, so
>an upgrade would be pretty expensive. I’m hoping that the usage is low
>enough that I can just replace the panel without upgrading the service,
>so having usage tracking would be really helpful.
>>>> Are you planning on adding new electrical devices/appliances, or
>just more outlets/lights?
>>>> 
>>>> Ultimately, the size of your service determines how many "things"
>can be running at the same time.  If you aren't adding (or many) more
>"things" then you likely don't need a bigger service regardless of how
>many breakers/fuses you add.
>>>> 
>>>> If you want to be a little more scientific without spending any
>money you can fire up a spreadsheet.  Getting average power usage is
>pretty easy: get the total kWh from your power bill and divide it by
>the number of hours in the billing period.  Getting peak current, which
>can tell you how close you are to exceeding your service capacity, is
>much trickier.  However, you might be able to get a rough estimate
>simply by looking up the power rating of all your electrical equipment
>and adding it all up.  That would simulate a worst-case scenario, like
>after a power outage, when everything tends to come on at once.  Start
>with the power hungry things, like electric heaters, AC units, electric
>range, electric clothes dryer, fridges, freezers, microwave, dishwasher
>etc.
>>>> 
>>>> Even better, at least for plug-in appliances, is to get a plug-in
>power meter such as a Kill-A-Watt and find out what your power hungry
>devices draw, then add those up.
>>>> 
>>>> Good luck!
>>>> 
>>>> 
>>>> 
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>>> 
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>> 
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