Search found 767 matches

by Pepperman
Wed Aug 22, 2018 5:24 pm
Forum: Electrical, Theory and Practice
Topic: Timetable set to phase out high-energy light bulbs
Replies: 184
Views: 84042

From next month, September 2018, the manufacture or import of more types of high energy lamps is to be prohibited. The main types affected are most mains voltage halogen lamps including. All common type of mains voltage reflector lamp, including PAR 30, PAR 38, GU10, and similar. All common types o...
by Pepperman
Tue Aug 14, 2018 8:48 pm
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 488
Views: 80417

Agreed on the working from home front. We should move towards compelling companies to facilitate home working where appropriate. Most of the heavy lifting will come from cycling, walking and public transport though I think, rather than AVs. And I'm not sure trams and trolley buses make sense in an e...
by Pepperman
Fri Jun 08, 2018 9:59 am
Forum: Electrical, Theory and Practice
Topic: Off-grid house
Replies: 72
Views: 20722

Even better than the Zappi:

https://twitter.com/Openenergymon/statu ... 0873841665

Open source, just qualified for the OLEV grant and has PV load diversion.

And it's Welsh :)
by Pepperman
Wed Jun 06, 2018 11:29 am
Forum: Transport
Topic: "Blue Sky Thinking" about Heathrow
Replies: 98
Views: 38288

I'm not sure parliamentary approval looks so doubtful. Tories being whipped and plenty of Labour MPs support.
by Pepperman
Tue Mar 27, 2018 10:55 am
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 488
Views: 80417

Interesting.
by Pepperman
Sun Mar 25, 2018 5:21 pm
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 488
Views: 80417

I guess he's getting them wherever he can - the Tesla model S used 18650s . As I understand it, the Teslas (and other EVs) using Li-Ion cells don't incorporate balanced charging of the cells in the design... My own experience - mainly with electric bike batteries - is that a pack can fail because h...
by Pepperman
Sun Mar 25, 2018 8:33 am
Forum: Transport
Topic: Are we on the brink of an electric car revolution?
Replies: 488
Views: 80417

There's guy called Jehu Garcia in the states who has been recycling Tesla batteries into 'DIY Powerwalls' for a while now. I believe he uses second hand 18650 cells from laptops mostly but he is making what you could call homebrew powerwalls. There is a market for used modules from written off Tesl...
by Pepperman
Mon Mar 19, 2018 7:52 am
Forum: Electrical, Theory and Practice
Topic: Off-grid house
Replies: 72
Views: 20722

You should also be aware that an off grid version of the Zappi EV charger is in the works:

http://myenergi.uk/product/zappi/
https://twitter.com/MyEnergiLTD/status/ ... 1788033024
by Pepperman
Mon Mar 12, 2018 3:35 pm
Forum: Electrical, Theory and Practice
Topic: Off-grid house
Replies: 72
Views: 20722

Why not go for a low powered DC immersion for late autumn to early spring and then use AC immersions for the rest of the year? In summer you'll have plenty of power left over to run your high power inverter. Whilst 'on average' there is more excess energy in summer, in practice there are plenty of ...
by Pepperman
Fri Mar 09, 2018 11:34 am
Forum: Electrical, Theory and Practice
Topic: Timetable set to phase out high-energy light bulbs
Replies: 184
Views: 84042

As an aside; The majority of lighting is used in domestic settings. The majority of the time when lighting is used it is dark. The time of the year when it is most dark is in the winter. Winter is the time when some form of domestic heating is used the most. Most domestic heating, nowadays, is ther...
by Pepperman
Fri Mar 09, 2018 11:28 am
Forum: Electrical, Theory and Practice
Topic: Timetable set to phase out high-energy light bulbs
Replies: 184
Views: 84042

All we need to do now is get rid of those pointless decorative incandescent bulbs! In London I'm finding that more and more the decorative hipster bulbs are LEDs. I wouldn't be surprised if the incandescent ones disappear in the next few years and I'm quite comfortable with decorative lighting if i...
by Pepperman
Fri Mar 09, 2018 11:25 am
Forum: Electrical, Theory and Practice
Topic: Timetable set to phase out high-energy light bulbs
Replies: 184
Views: 84042

High CRI LED lamps have a spectrum that is very similar to incandescent lamps. Go for CRIs of 95 or even 98 and it's basically like using incandescent light.
by Pepperman
Fri Mar 09, 2018 10:55 am
Forum: Electrical, Theory and Practice
Topic: Off-grid house
Replies: 72
Views: 20722

Why not go for a low powered DC immersion for late autumn to early spring and then use AC immersions for the rest of the year? In summer you'll have plenty of power left over to run your high power inverter.
by Pepperman
Thu Oct 26, 2017 3:32 pm
Forum: Transport
Topic: Are container ships getting too big ?
Replies: 7
Views: 6186

There's a small but passionate cargo ship travelling contingent. I'd love to do it some time but it does work out quite expensive (something like $100/day last time I looked). Maybe it would be a good option if I ever need to write a book.... Satellite internet has become a lot cheaper in recent yea...