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What if a 3036 never gets any faster as the current increases?

My guess is that nobody noticed. Or if they did they were reluctant to change, like they were with the old reg for ring-final cable current-carrying-capacity when someone noticed that 2.5mm² in conduit in thermal insulation didn't work.

But those are the rules for a foreign country.

But I'm not likely to spend my share of that £26B on road safety or poor-relief.

I'm looking at around 20±, depending on how unnecessarily I divide them. When I started planning it I was going to use MCBs behind 4 RCDs (got the space). Like others here I've never suffered nuisance trips. RCBOs have "come down in price" over recent years but still not a trivial price...

And a number of large manufacturers make multi-pole busbars. But need there be? Apart from having to be wider as devices are twice as wide, and not needing a neutral bar, a CU is just a box with a DIN rail. And the industry has plenty of experience of 2- and 3-busbar designs if people want...

CEF have Crabtree & Wylex - SP+N Type A RCBOs with AFD in single-module packages. Normal height too. Only £155 - £186 list.

Well, there ya go. OK - it isn't a type F or B, but they're getting there. Crabtree & Wylex - SP+N Type A RCBOs with AFD in 18mm packages. Normal height too. Only £155 - £186 list at CEF. Hahaha

Do you test your RCDs with the devices powered up?

The law of diminishing returns kicked in a while ago. AFDDs will be next, and then the arguments can be about one up front for the entire installation vs divvying up the circuits into 2 or 3 groups vs combined MCB/AFDD or RCBO/AFDDs. Good luck to the miniaturisers getting a Type B RCBO with...

You may be sure that as the prevalence of Type F & B RCCBs increases, then as soon as the test equipment manufacturers are in a position to produce testers they'll be lobbying the regulators to require their use. And making them is probaby not hard - no trip loop testers stop RCDs tripping by...

See above for demand. Maybe someone should organise a sweepstake for the date of the first complaint from a landlord who has got a nice refurbished property with all new appliances, an EV charging point, and an all RCBO CU who has picked up a C2 for not having Type B or F RCD.... But as you...

Both requirements (the first following on as a consequence of the second) are upon us. The problem is that it's a "creeping" requirement - people are gradually installing more and more equipment which makes even Type As unsuitable, but may be blissfully unaware that their RCD is no longer...

I wouldn't want mine rewired every 25 years by one person, let alone many.

Fill the chases, heavy duty lining paper, and rediscover your love of decorative wallpaper.

Yeah - thought about thems. I'd certainly feel more comfortable putting one into the bottom of a device along with the bus-bar prong than a cable, even a crimped tri-rated. But incompatible with my busbar - I'd have to bend the prong 90° and then it would obscure the bottom terminal screw in...

Twist them together and wrap them in tape, of course. :D I've got distribution blocks which would do fine for that, but from memory they're all 36mm wide, so I might as well just stick a switch in.

Yes, I thought of that. I also thought am I sure that the bottom terminal of the RCBO is designed to support that? It's done with switch incomers to feed the other half of a split-load, but.... I also thought of using a device - more likely a fuse carrier to get an 80A rating. "Terminal...

No it doesn't have to be Eaton

Consider a scenario with an all-RCBO CU with no incomer, e.g. the main switch external because an enclosure with switch+SPD has been used, and all-RCBO means there's no RCCB. How to connect a L tail to the busbar? In all my years I've never come across a device to do that. I've found this...