Search results

You'd setup the boiler's heating connections to an S-plan. That has two (or more) 2-port zone valves to direct the water as required. As a minimum, one zone for heating, one for hot water. When there is no call for heating, that zone stays off - and the boiler will just run when needed for hot...

It should be insulated, but builders do all sorts - including just throwing some pipes down and pouring concrete.

Except those which are designed to be able to disconnect the mains and operate in isolated mode. Some need configuring for one role or the other, some can automatically do it.

We've got a number of sockets where that isn't the case. Worst case we have to move furniture to unplug, but can reach the switch.

I'm thinking that if you are going to be running an extension, moving plugs, etc. then it might be easier to just plug the genny into the inverter. There would then be the option of charging the battery for a short time and then stop the genny - probably more fuel efficient overall. BUT that...

It's really irrelevant whether the socket is SP or DP switched - for isolation you pull the plug since I can't recall ever seeing a domestic BS1363 socket with anything remotely resembling a lock off facility. Do we bother ? The days when the DNOs came round disconnecting local earth rods when...

Your options are to manually change the connection and manually start the genny, or install an ATS (automatic transfer switch) so the inverter can switch the input from mains to genny when needed (and start the genny if you install the remote control interface).

As I view the diagrams, no you do not need to cut any joists. In fact, you MUST not go cutting 125mm holes as you'd destroy the strength of the joists. Also, you'd not be able to thread a rigid pipe through. Taking another look at the materials list, it looks like most of the ducting is 75mm...

That's an interesting thought. Irrelevant since you have full isolation with the plug out - even with an unswitched socket. And there's something to be said for not having a handy switch on the heating. So ? If it has no electrical connection, iit probably doesn't need an earth. If it's...

Because some MIs used to specify that, and even where they don't, gas fitters don't know the difference between "must have isolation with min 3mm contact clearance" and "must use a fused connection unit with BS1362 fuse and min 3mm contact clearance". When mum's boiler was replaced, they removed...

A lot depends on when it was built and what sort of person built it. You may find pipes cast into the concrete - as in pipes laid, and concrete poured on top. Obviously zero scope for maintenance/alterations without digging the floor up. For good measure they'll have made no attempt to insulate...

TBH I don't know unit rating, just that the plan is "road moveable" and "multiple units per site". Imagine a giant multi-slot toaster. I wasn't being serious. It's frightening that policy decisions are being made by people who do believe it.

Indeed, but I was actually thinking more the other way around. If we assume (as it's quite likely) that the habitats would be "tin cans", then all the electrical cabling will have capacitance to it, and since (as you point out) that will (on the whole) apply equally to all phases, it will create...

That is indeed the idea. At present, each nuclear station is almost a one-off, with a lot of site-specific design - which means long lead times, and a partially new safety case for each one. Hence very long delivery times and expensive. The idea with the SMR is that the basic design is standard...

So this will become an inaccessible junction then ? Several things wrong here : 1) If a junction is inaccessible then it must used maintenance free connectors - such as Wago in the correct enclosure. 2) Even if boxed in, it needs the cover on - which you can't do if the cables don't use the...

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 !