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More like setting up some large outdoor event with multiple "mobile" units, power distribution, and all that goes with that. So unless you do everything right, a fault in one unit can create a hazard in other units. And that's the same whether it's AC or DC. Edit: also, EVs aside, vehicles are...

Everything conductive. It won't, but that's not important. You seem to be working on the assumption that the system is so isolated that you could touch a line conductor and not get a shock. In reality, an installation of any size will have significant capacitance from all conductors to...

For exactly the same reasons as we earth power systems here. To an extent, yes. But going DC isn't as simple as it first seems. If you have battery storage, then you have choices to make : DC-DC conversion (both ways) between battery and bus to maintain fixed bus voltage. There's power loss...

And while they are fixing the main problem, they could also fit the correct earth connection. That clamp is not permitted for that application.

Is that https://en.m.wikipedia.org/wiki/Life_on_Mars_(British_TV_series) with John Simm & Philip Glenister ? If so, brilliant series and had me guessing wrong all the way through. Also watch the follow on Ashes to Ashes. Fire up the Quattro !

Gave it a go, the cap came off without too much of a fight, luckily to person stood next to me spotted where the little spring went on the floor - and I was being careful :rolleyes: 4off AAA later and now the display has stopped flashing "r", now it just shows "0" and the red light flashing...

Thanks, I'll be that way tomorrow and give it a go.

Thanks. So batteries in the tube sticking up on the left, and it unscrews ?

Then they are mistaken. There can indeed be issues in that boilers need a minimum flow rate - basically no-one makes a boiler designed to work with the inherently variable (down to "very low") flow rate of a fully controlled heating system. So you do need to ensure a minimum flow rate - either...

This is in the tank at the church hall, I suspect the battery is low or flat. A while ago the display was alternating between a reading and "c", now it's showing "r", and the red LED is flashing. When I try searching for instructions, I get lots of hits for the newer types, but few that look...

I have actually been on a tour of a place doing ice cream - I vaguely recall it was a dairy and did other stuff like yoghurts etc. If you just try freezing the mixed ingredients than you will get a "gritty" texture with ice crystals. The way it's normally done is the mix is passed down a metal...

And it's also an (illegal) way of home fortifying wine. Freeze it, pick out the ice crystals, wine now has a higher alcohol content. Many years ago (back when 8 bit computers were still something of a luxury as a home item), a friend told me how he'd written a program to calculate how much ice...

I guess it would depend on the design of the freezer. I assume ours is similar, but I know for certain that my parents old upright had an expansion coil in the top (above the storage cavity) and a fan to circulate the air internally. The defrost would only heat that expansion coil (electrically)...

Upright vs. chest is an old discussion. AIUI it's usually down the chest freezers generally having better insulation than uprights. The difference in "stored cold" between pre and post defrost cycle would be minimal IMO - not a large quantity of ice, and being water ice would not help much. My...

So what was the story there ? I think I was just into my teens when I recall looking at the lists from Bull and wondering what my pocket money might buy.

Ah, that's a piece of string question. Go back a while and you'd need an oversized inverter to handle the startup current of the compressor - so perhaps a surge rating of 10x the running current. These days inverter drives are common and the startup requirements are less. Then you need to look...

For those of us old enough to remember when surplus dealers had to do little printed booklets, I once recall seeing Bull Electrical offering submarine battery cells ! I know the spec (but can't say) and have sometimes thought that a few of those plus a devent charger & inverter would make an...

https://www.gov.uk/guidance/using-rebated-fuels-in-vehicles-and-machines-excise-notice-75 2.4 Machines and appliances for heating and electricity Machines and appliances being used primarily to generate heat and electricity for premises that are not used for commercial purposes can use red diesel.

Would they even know it's there ? All fine whike the OP still lives there and is compis mentis. But we're all familiar with "bought a house, found 'interesting' but undocumented things" situations.

No surprise really. If you assume 2off 110V windings, make one of them 55-0-55, then you connect the other winding in parallel for 110V or series for 220V. Unless you start switching the earth, you naturally end up with 55-0-165. And for the majority of uses, nobody cares. If it does matter...