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If you want a single specific item in BS7671 that states 'do not connect solar to multiple circuits' then no, there isn't. If that type of thinking was continued, BS7671 would be thousands of pages of specific entries attempting to cover every situation possible. Fortunately standards are not...

Bidirectional devices is 530.3.201 which was added in Amendment 3 of BS7671 18th edition. For PV not connected to RCDs which supply multiple circuits, in BS7671 this is mainly covered under disconnection times 411.3.2.1 where if the PV inverter is connected to multiple circuits, when the RCD...

But if trouble had occurred, they might have preferred something more recent with additional safety features. Like driving a 40+ year old car with no seatbelts, no airbags, no antilock brakes and a mixture of cross ply and radial tyres. All perfectly fine and safe until it isn't.

A novelty item of little benefit in most situations. Problems being stored up for the future.

Fluorescent tubes are obsolete. Production and importation ended over 2 years ago. All that's left now is old stock that certain vendors have hoarded to sell at high prices.

It will, because most of the cost is the items inside the consumer unit, the installation of them and the testing of the circuits connected. The actual box on the wall is an insignificant part of the total. All solar PV requires that, and solar cannot be on an RCD shared with other circuits...

It's a brand which only Screwfix sell. Whether it's good or not really depends on what was specified for it and who made it. Built in USB outlets in general are a terrible idea as they are powered 24/7 including when not in use, so failure is inevitable. Those which some people rushed to fit...

£100k at least. Very easily a lot more. Fiction. That's exactly what it is. The building is at the edge of a tiny village in the back end of nowhere, right next to a primary school. Even if it was reopened as a venue, expect complains about noise, disruption and antisocial behaviour. It...

No, and it wouldn't be of any use even if there were. For multiple showers or other outlets in use at the same time, the flow is shared between them, so high flow rates are needed. That applies regardless of how the water is heated - if the flow into the property is poor, then it doesn't...

Legacy manufacturers turned out a selection of EVs which were total crap and overpriced. Unsurprisingly they didn't sell well. Those manufacturers which have recognised the error will be making better EVs in future. Ford possibly. Others such as Stellantis who believe that a big swerve back...

Do not go there. Before anything else, check all of the connections to the alternator and the battery and the ground lead(s) to the vehicle chassis. Then if the alternator is indeed bust, buy a new alternator and a new battery to go with it. Even if you could replace the regulator, that may...

This is the hot water valve: The other black box with the rotary knob is the thermostat. Yes, but the wiring to the other items will also need to be checked/replaced. There are wires in the terminals that would be expected, those being the L&N supply and the two switched outputs to heating...

That was a normal S plan, which is all pumped. It's also reasonably modern, so forget about gravity/C plan/other, as that's all irrelevant and obsolete. Two 2-port valves, one located towards the front of the hot water cylinder, and the heating one has been removed, disconnected from the wiring...

HDMI or Displayport audio extractor in the cable the connects to the monitor. random example: https://www.amazon.co.uk/Extractor-Converter-Splitter-Lossless-Soundbar/dp/B076T7Y4BJ

Driving until there is no fuel left is a user failure, unrelated to the capacity of the fuel tank. The same for most people. Capacity of fuel tank / battery is irrelevant as most people would refuel or recharge before it says nothing left. If morons decide to drive for miles with low fuel /...

Caked with limescale internally / other parts failing. If it's boiling the water it's dangerous. Replace the whole thing before it causes injury.

VW and other German labels such as 3 prong, Pigsnout and the four rings of Satan being of superior quality ended decades ago. Today they are no better than other non-German manufacturers. They are just sold at higher prices to people who continue to hope that the build quality of 1980s...

That day will be long after the van is scrapped. That is VWs first effort at an electric van. It was a substandard conversion done by some other company, and was done at a time when they thought electric vehicles would be a short lived novelty item and they might sell half a dozen. It was junk...

Zone 1 is directly above the bath. Fan is in a window recess, and the bath doesn't reach the end wall anyway, so even if there was no recess it's still in zone 2. Mainly unjustified fear, doubts and decades of 'the old ways are best' propaganda.