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Ah yes.... its also my experience that "Theatres", indeed any entertainment venue that needs to cope with varying temporary supplies, & 'Council Electricians' don't go well together. It always goes wrong! To be fair to the good old BS546 standard, the old 15A plug was so well engineered that...

I think this has more to do with the 'earth' than the phase! If you supply a load in your neighbors house from yours you'll also be exporting your earth into the equipotential zone formed by his bonding. There is no guarantee that your 'earth' will be at the same potential above true earth as...

That's deliberate? I always assumed it was the result of poor moulding/manufacture.

I think the problem here is that 'impedance earthing' is being taken out of context. Its normally done, in controlled conditions, to limit the fault current & hence the damage to a piece of equipment, usually a generator or a transformer. A typical example would be a large (several MW) genset...

Oh dear, it is very much an issue! The designer will have made certain assumptions when he developed that window & its seals - not the least of which is that water doesn't flow up hill! You can't just turn a window 180 degrees and expect it to still be water tight!

Such things already exist off_the_shelf.... Have a Google for "Shower Priority Unit" ..........

As I said at the beginning, this isn't a request-for-advice thread. Its more of a Sunday afternoon discussion thats now run over into Monday. I understand the pros & cons of running an earth free system. Most of the suspects I expected to join-in have, with the exception of Eric who I'm sure...

Are you thinking of the original festoon that was made by tightening the self piercing 'beantree' lampholders onto a two core flat rubber cable?

Gentlemen, Thank-you for your responses so far - none of which I disagree with. Lets explore the scenario a little further... So, if we run the system 'earth free' (no part of the transformer secondary is connected to earth), lets consider what would happen in the event of a 'fault'. The...

Following on from a recent discussion that moved slightly off topic and into the pros & cons of isolation transformers, I thought I would start a separate learned discussion :) So, the scenario : A temporary outside decoration is to consist of a 20m length of festoon cabling with 40 coloured...

So your "Electrician" has fitted a pipe clamp, intended for use on a hard copper water pipe to a soft lead covered PILC cable and hes says no need to worry! Hmmmmm The problem is two fold: Lead is very soft and will flow, at room temperature, when a force is applied. This means that it will...

Whilst I don't disagree, the house I grew up in the 1980s (ex Council House) had all the sockets & light switches installed like that - plastic box fastened directly to brick & semi plastered in.

It's almost certainly the inrush current when those LED drivers are first powered up thats taking the 5A breaker into its instantaneous trip region. In more detail.... the front end of those drivers will probably be a rectifier followed by a reservoir capacitor. When the driver has been...

There's a whole family of these. I agree that the 4h & 6h are the most common in the UK, but.... At work, we have some 9h blue 5 pin versions for 208V 3phase 60Hz.. Several times we've been told by "inspectors" that they are wrong & that blue must be 3 pin 230V :-)

But, since the coil contains no 'net turns' (ie. it contains both the line & neutral conductors, carrying exactly the same current but in opposite directions) does it even have ANY inductance?

Does anybody know of a WiFi Forum? I'm not so much thinking of the config/setup/keyboard based stuff like SSIDs & security etc, more the RF bit - propagation through materials (like racking), mounting heights, whats the effect of too strong a WiFi signal etc etc. Any pointers?

If its a 1980's build with a plastic service..... isn't it likely to have a plastic stopcock?

There MUST be an external stop tap, you just haven't found it yet! There's no way you have a connection direct to the street main with no stop tap!

I'm sure you could.... but would any insurance company recognise/accept it? In the event of a break-in would they refuse to pay out because its a not a manufactured panel?

My own, personal view...... You've never going to make more money on any kind of savings/investment than its going to cost you to borrow! Pay off the mortgage.