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Annoyingly toolstation seem to have decided to no-longer carry the minigrid fuse modules. They are listed as "clearance" and "out of stock for delivery", when I look at collection it only shows me one branch in my area with stock. The click4electrics site seems down right now, but my last order...

Click minigrid is great for this kind of thing, less fussy-looking than most other modular ranges, available with both round and square edges and very affordable. Once you account for the saved backbox, I doubt the cost of doing it with minigrid would be much different from doing it with a...

Personally I'd probablly either use an unswitched FCU, or use a modular fuse on the same plate as the first switch.

I don't know what americans would call what we call a "boiler". But afaict "wet" central heating systems like we use in the UK are unusual in the USA. Americans tend towards "central air" systems, where heated or cooled air is pumped around the house. The "furnace" is the component of the...

That's only true if the power factor is 1, which it pretty much is for incandescents but may not be true for other types of lighting. For LEDs I would assume a power factor of 0.5. Still it would take a *lot* of domestic-sized LED lights to reach 5A.

Something to think about when doing this is how easy/difficult it will be for the next guy to find the fuse. IMO to minimise confusion the fuse should be close to (or better-yet part of) the light switch. I wouldn't want to use a FCU in one room to supply lights in another.

running the numbers. A Europlug has pins of 4mm diameter, spaced 18.6mm between centers at the base and 17.5mm between centers at the tips. That gives, at the tip an outer width of 21.5mm and an inner width of 13.5mm. A UK shaver plug/BS372 2 pin 5A plug has 16.7mm between centers, and a pin...

Perhaps more importantly, working in radians makes calculus much easier, because it avoids annoying constants in the integration and differentiation formula.

My parents have (or had, I don't know if they still have it) an old adapter with 13A plug pins, a 5A 3 pin socket and two 2-pin sockets, presumablly to BS372. We found Europlugs did not work reliably in said adapter, they would work at first, but over time had a tendancy to either fall out, or...

Do you have a make/model for the socket?

Thats pretty much what they do in hot countries (except they seem to rely on daredevil climbers rather than cherry pickers in many of them).

The closest I'm aware of is https://cpc.farnell.com/tiger-power-supplies/eu-rw-2p/2-pin-euro-rewireable-plug-2-5a/dp/PL16717?st=europlug It's a Europlug not a UK shaver plug, but most UK shaver sockets will also accept Europlugs. Also they don't seem massively clear on exactly what tool should...

Loop at switch takes more effort and materials, but is IMO the better solution in a new construction or major renovation scenario for two reasons. 1. You automatically get a neutral at the switch position*, this is useful if you want to install smart switches. 2. It works better with "fancy"...

No, I mean by reducing (ideally eliminating, but bonding conductors have resistance) the potential between different items within the "equipotential zone" during the fault.

A problem with a plain IT installation with no earthing/bonding is that the "first fault is free" but it's also silent. The second fault can be shocking.

In a TT installation, bonding reduces the touch voltage in the time between when a fault occours and when a RCD trips (which for distribution circuits could be several seconds).

That does look like a TN supply. At this point, I think you need to get it checked out by an electrician (or at least someone with the right test equipment).

AIUI kitchens were never "special locations" in the BS7671 sense. However, they were called out, along with "special locations" and "special installations" in the notification requirements that accompanied part P. These notification requirements have been superseded in england but are still...

We see this all too bloody often. Statements on test reports that don't make sense and look like they have been copy/pasted from somewhere, either manually or by the software that generated the report. The most obvious interpretation of that line would be that the EFLI is less than two ohms...

My understanding is that there are basically two sorts of hydro. "Conventional hydro". Water is stored behind a dam and drives a turbine whose speed is coupled to grid frequency. Power is controlled by controlling how much water is released from the dam. This does have inertia, though perhaps...