Diesel Boiler monitor

folks,

 I've built a monitor for a Riello RL28 which is a 178-332kW commercial diesel boiler. The objective was to just monitor running time. So, I'm attaching some photo's of the build and the code is at https://github.com/PowerMeter/BoilerMeter 

I welcome critical comments , given that I've a lot to learn, so feel free to take out a 'red pen'. And reuse if it helps.

I'm getting a more suitable mount machined - not proud of my re-use of the metal switch box, though it was a useful proto box.....

I've also attached the dashboard but the realtime cumulative chart isn't displaying for some reason. I've never seen this before ( I'm a chrome user)....

I intend to build a real time monitor using supply and return monitoring of the diesel lines but it's months away.

For now, this works and I just need to get battery life of 12 months and I'll be happy.....

Eamonn