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robl
@robl
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Joined: Mar 23, 2022
Last seen: May 8, 2026
Profile Activity
Topics: 1 / Replies: 214
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Reply
RE: New Fogstar 15.5kWh upright solution

I used 50mm2 cable, sunsynk 3.6kW to 100A givenergy breaker to 280L fogstar. 50 is the largest that fits all the above.

2 years ago
Forum
Energy Storage
Reply
RE: Planning to add battery storage to existing solar in outbuilding

@wasz Note: If you're adding a 3.6kW inverter to a 1kW system, you'll have to ask your DNO if that's ok. G98 is the form I think. You get a total o...

2 years ago
Forum
Energy Storage
Reply
RE: Planning to add battery storage to existing solar in outbuilding

@wasz Yes! To be clear, we have 10 year old FIT PV, and more recently a 3.6kW sunsynk Ecco with a 15.5kWh battery. The 3.6kW Ecco inverter charge...

2 years ago
Forum
Energy Storage
Reply
RE: Planning to add battery storage to existing solar in outbuilding

East/West split is actually quite favourable these days, as PV payback is all about replacing self use now, rather than the FIT (which doesn't exist a...

2 years ago
Forum
Energy Storage
Reply
RE: Battery system for cheaper heat pump running

@geo3geo That graph I did is in excel (I think version 2006), using the best fit line it has built in. You can select linear / polynomial / lots o...

2 years ago
Forum
Energy Storage
Reply
RE: Battery system for cheaper heat pump running

Attached below is a link to more detail on our gshp system. It's over at buildhub - the first post there has a 3MB pdf where I left the details of wh...

2 years ago
Forum
Energy Storage
Reply
RE: Battery system for cheaper heat pump running

I'm glad you asked! It is very low, but it does work for us. The heatpump is diy - I guess I started building it with cheap parts for interest, thin...

2 years ago
Forum
Energy Storage
Reply
RE: Battery system for cheaper heat pump running

It's worth having a go at calculating your expected daily electricity use. Everybody is different, but I hazard a guess that the national average is a...

2 years ago
Forum
Energy Storage
Reply
RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners

My understanding is that manufacturers overstate their refrigerant benefits, generally suggesting they have the higher efficiency. There are so many ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do ASHPs work with poor insulation?

My EPC experience was pretty poor. Over the years I’ve made loads of home insulation improvements - and I pointed them out to sap guy, who was to be ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

While you could defrost without using energy, it’s difficult. You could vibrate the coils, and get ice to fall off intact. I’ve seen an ashp designe...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@iancalderbank I soldered on small diameter copper pipes onto the pipes feeding into and out of the heatpump, both house side, so they both just ha...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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