Search results

1980 I got a job on a pipeline in Algeria and started to work on heat pumps, or ACs as we called them back then. The problem was charging the units with gas, we had around 5 sites over a 310 kilometre pipeline, and one unit to recharge them with. So as an electrician, I would fix the fault, then...

It seems the problem is where a pump can cause a negative pressure in the supply so it can draw in nasties into the drinking water from any small leak. So power showers need feeding from a header tank, not direct from mains, but nothing you are doing changes the situation so as @denso13 says.

I would think a fault underground is not likely to set your house on fire, where the same fault in the house may. When this house was built, we had the old Wylex fuse box, with a main isolator rated 60 amps, and the DNO fuse was also 60 amps. Today most consumer units rated 100 amps, (can go up...

Interesting question, it has been shown that an unidirectional RCD can go on fire if power is back fed through it in the wrong direction, and the phrase used is potentially dangerous, and if there is a chance that something will feed power in the wrong direction then an inspector would be...

I hope so, as I also have them on all through the night. Plugged into a smart socket so off during the day, but it would not matter if left on 24/7.

Only in the last year did I know what in home display was. And smart meters have been out a long time. The same applies to SOC, once I realised it was state of charge, it seemed so obvious, but it took some time to work it out.

Octopus Server?

Request for Comments or Royal Flying Corps? The ring final needs the word final, as rings are also used, so sections can be isolated, the word final has caused a small problem as you can't form any other circuit after it, as it is the final circuit, however we do, if we use a fused connection...

I tell my wife, do the washing either overnight, or in the morning. Between 11 am and 3 pm the batteries will become fully charged, but by 4 pm this time of year, if anything discharges them after 3:30 pm they will often not recover before dusk, and it is dusk to 00:30 am when we seem to use...

I was watching YouTube, and it auto moved to next video, and some guy was saying how we should heat the whole house, and heating room by room was a bad move, as heat moves room to room, I have seen the chimney effect on the stairs with some houses, so I suppose he does have a point. I suspect...

That does seem about it, good advice. I do find it hard to work out what to do without meters. So easy when you can see exactly what is leaking, but even with all the tools, these as well, when my front of house sockets tripped, I never did find out what it was which caused it. I had stopped...

Thanks, for me, what I want, is a SOC IHD. (State of charge in home display) the IHD I have, shows import and export, in both cases, by time it shows something, it is too late. If it shows import then the battery is fully discharged, and if export it is fully charged, what I want is when 80%...

As a birthday treat, I was taken to a secret nuclear bunker, not very secret with all the signs, but what I saw was what I had seen with around 25% of the BT telephone exchanges I had worked on. And all in all, was a load of scare monandry, and had to be taken with a pinch of salt, since in...

It seems we are motoring alternators to give us rotating mass. On a nationwide view, it would be better to use large solar arrays, so the grid has some control, they can select wave, tide, wind, or solar, at home solar is the only option. This is what I was looking at, it would not really make...

You got me wondering, the mounting flange 23 will not fit in centre of brush. But with that left off, seems a good fit. Tried first without guard, but the clip which holds the guard from rotating, did not catch but very close, so tried it with guard, and it does seem to fit OK. Both cases...

The question is maintenance, even with units which plug into some fixed outlet, will they still be available in 3 years time when the unit fails? I went for plug in unit now withdrawn, OK I can reuse this with another chandelier, so they may be on jack chains, so can arrange so it hooks up and...

The 800 watt limit, and how much that will help, is the main question. My solar yesterday so I need the battery to cover from 05:30 to 08:00 and 16:50 until 00:30 next day. So approx 7.5 hours in the evening, so around 6 kWh if drawing 800 watt for the whole of the time, I have some heavy usage...

I look at the boilers at work, and wonder where one would use a tap or die? Calliper yes, although more likely a vernier. We do have taps, and they tend to come as a set of 3, where the ones I got from Lidi only one tap, I have used them to fit grease nipples, but not in the boiler. Since our...

The discs advert says 10,000 RPM, but the disc says 4,500 RPM the max speed of grinder is 10,000 RPM, but it does have 6 speeds, but nothing in the paperwork says what speed it runs at when speed 1 is selected. So I am not sure about using the brushes, clearly using eye protection etc, but they...

I have noted, there are tubes now designed to work with an electronic ballast, but the early tubes were not to be used with electronic ballasts. I have seen diagrams where only one end is fed, the other end of the tube is a dead short between the pins, so putting the tube in wrong way around...