andy

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About andy

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  1. @Dan F That's what I was told by my supplier when I tried to order 1 Powerwall late last year. Apparently it's a new SSEN G99 regulations where they don't want the phases unbalanced but hey this might be the sort of thing where if you ask again you get a different answer... if you are told something different please do let me know and who you use as my preferred outcome is 1 x Powerwall. @Nickfromwales I have started looking at the DC battery options as I have a 3 phase SolarEdge system but have not opened that conversation yet as I think this might be a different SolarEdge inverter, not sure I can retrofit but as I said I've not looked yet. Downside of DC coupled is I'd need to put that in my comms room rather than in the garage that I can do for AC coupled Powerwall.
  2. Hi Dan I had a 3 phase meter installed by Octopus last year - lots of challenges along the way and suffice to say I still have my old single phase supply as they mixed everything up... However, they don't seem to know about "net metering" so perhaps the key phrase here is "vector sum" instead? I am still not even on their outgoing tariff but hopefully will sort that soon. The other down side of 3 phase is if I wanted Tesla Powerwall now, I need one per phase, so SSEN now stipulate, I really cannot see how the maths there adds up, alas I have 6kW of PV, so I don't know how well 2kW/phase (minus active load) would charge the batteries - hell, on the bright side I'd never run out of battery capacity!
  3. I have a home brew (by plumber) 22mm copper pipe loops for hot and cold with Hep2O 1/4 turn full bore valves for each feed, then a continuous Hep2O run to the target for each pipe (no joins in walls to hopefully avoid any future problems).
  4. The only way it can be used and prevent birds getting in underneath, getting trapped and dying would be if you buried the entires perimeter which just isn't going to happen (and doesn't happen, thus making the stuff even worse). Plus if you do use it, it should be checked at least a couple of times a day to see if there are any birds trapped, so they can be freed. Alas I see this an an unneccesary and dangrous trend further impacting our already hard-pressed wildlife and I hope we see it banned soon.
  5. Please don't use that netting @nod - IMO it needs banning from use ASAP. It's impossible to use in a manner that is not a hazard to wildlife (plus the plastic footprint of it).
  6. Hi I have a Zehnder ComfoAir Q350 ST on a timber frame with airtight layer on outside, foil backed plasterboard on external walls without the enthalpy exchanger (but you can retrofit that if you need to AFAIK) and my MVHR is as follows right now: Extract Air 22.6C/50% Exhaust Air 13.6C/90% Outdoor Air 11.0C/89% Supply Air 21.4C/51% https://www.zehnder.co.uk/products-and-systems/comfortable-indoor-ventilation/zehnder-enthalpy-exchanger Whilst I am not capturing this data yet to drag it into InfluxDB, it is pretty constant humidity, around 45-50% supply I think.
  7. More data, this was yesterday morning flow and return temps - alas I don't yet have external temp sensor but it was around zero first thing and icy (outside). I am wondering if a buffer tank might be a good call here but not a decision I will rush into. As you can see the time spent either defrosting or recovering is considerable: Compare that with the afternoon where ambient temperature is higher:
  8. Glad to hear you weren't serious about it too
  9. They won’t damage it and it is illegal to shoot any bird (except under certain general license conditions, etc) personally I find it depressing and reflects poorly on our species that the response is “kill everything”. We share this planet, remember...
  10. Right - made time to get Garfana up on my Raspberry Pi. The flow 1-Wire sensors are in the loft, so we have data now 🤓:
  11. What's done on my house to warmcell (airtight layer is outside) is 100mm hole saw through plasterboard (before plastering), then cut 200x50mm strips of 6mm or so plywood and push that through the hole so it overlaps. Then drywall screw that plywood so it spans the hole along with one or two screws to hold the original plasterboard disc in place, et voila! Scrim tape over when it comes to plastering. I did hundreds of them...
  12. I would (and have) run CAT6 (and CAT6a where I am running external PoE, not 6a everywhere) structured cabling back to 2 patch panels. I did consider fibre but decided just running some ducts was more sensible instead. One thing I underestimated considerably was service void requirements - if I was doing this again I would cater good size separate voids to run plumbing, electrics and network in along with spare ducting too. In my case it's compounded by my radial distribution for both all plumbing and electics so the amount of crap running about is crazy... Drop unused CAT6 into walls behind where you might need it in future (every corner?) and/or empty ducting will be sufficient I would think in addition what you'll actually have visible.
  13. So, here you go - happy new year, here's my Samsung settings... sorry there are so many pics, did I mention I detest this controller?
  14. I am in a similar position, need two shower trays going which drain straight into soil pipe. I am intending to use these - or one of the Wedi trays and then push 30cm or so of waste pipe down verically through a McAlpine DC2: https://www.wedi.de/uk/products/building-systems/floor-level-showers/fundo-integro