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Discussion Starter · #1 · (Edited)
Hi everyone,

New to the forum. I am a big VW fan and have contributed many DIY projects to similar forums. Hope I can contribute in the same way here.

My first DIY will be the fitting of a power meter to our Apache 700 Sargent EC500 cupboard.

The device I have purchased is a Sonoff POW elite. This will be inserted in the wiring between the EHU (orange cable normally) and the Sargent EC500.

I will use genuine JST connectors for the insertion before the Sargent so the wiring can be reverted to factory if I ever decide to remove the Sonoff.
(There maybe a couple of holes to fill on the vertical panel if I decide to remove).

Advantages of having a power meter: -
  1. Real time indication of watts being consumed by MH - takes the guesswork out of consumption.
  2. Historical usage data for 6 months.
  3. Resettable kW hours of electricity used.
  4. Indication of incoming voltage.
  5. Remote control / isolation of EHU supply via mobile application.
  6. Scheduled on/off EHU.
  7. Set power limit, Sonoff will disconnect at a set power (saves embarrassing EHU MCB trips).
So, if I find the where the DIY mod pages are I will be posting progress and images.

I have already received the Sonoff and am playing with it now.

Cheers :)

I have bought the 20A version of this: -

Edit:
Do I need to pay to use this forum in a meaningful way? If that is the case I may have to relocate...
 

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Discussion Starter · #4 ·
Thanks for your reply, I did see your install dating back to 2012 IIRC? Nice (y)

I did look at all available smart meters that use the current clamp, none of them gave me the features the Sonoff offers so despite the wiring I am happy to go ahead.

If I decide to remove it will be a simple unplug job of the JST VL 2x2 4 way connectors. It will leave a few holes of course.

As we are newbies to MH life I think we will be mainly on EHU for the foreseeable future so it should have a useful lifespan.

Also, just out of curiosity I'm interested to see the ec500 battery charger and water heater consumptions. Certainly the battery charger is a big variable (0-300W)?
I think the water heater is 850/1250W or close to those numbers depending upon the switch setting - this switching in/out as it needs to.

At least it puts a max consumption on my misses hair dryer ;)

Cheers :)

Edit:
The other big thing is validating energy consumption, I am aware some sites now charge per kwh? Nice to be able to check...
 
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