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skoool Xmas fares coming up in community centres in these parts. I have wanted to do a giant buzz wire game thing for ages. I remember back in the 80s a local electronic firm did one for the school, just a simple affair with a telephone bell & shiny brake-pipe "route" to trace the (wired) wand...

any RF bods done any practical TDR'ing with the latest budget VNA's that are now available? I have a miniVNA pro and a JNCRadio SV6301A, and I believe that both of these offer TDR functions.... was thinking of things like finding where the break in a cable that goes across the lawn to the garage...

Old stone-built house, damp gable. ground floor + 1st floor, then small loft void. suspected primary cause of damp is chronically failed chimney/cap. I am in middle of replacing chimney/cap. Which is to say I've removed the failed chimney & concrete cap element as far as the top of the stone...

Please see attached. I had to dismantle this PCB to repair a connector. I prised the FETs off this dried goo, which I guess must be some thermally conductive glue. is there any secret sauce to this, or could I just use any "RTV" setting silicone tube (like the tubes of goo that come with Furuno...

At the risk of getting booted, for being completely off the topic of UK Electric, but also because I know there are a few honey roasters on here; Is sending DTMF sequences through a licensed 2m repeater in UK "compliant" with amateur licensing? "why would you want to?" in this case, to...

is this normal? it appears to me that there is likely 400VAC between adjacent conductors in this photo, with conductors bridged by at times damp foliage.... which on the face of it seems quite a fire risk. but this is clearly operable. what am I missing?! (location is cambs UK)

Saw one of these tother day (see photo) I've seen a few like this over the years, and it seems to be always the L conductor that cooks up. whenever Ive seen this, it's been in "known dodgy" situations (ie, where unregulated DIY shenanigans are continuously ongoing, with operators who are...

Anyone know what the actual difference between a 2M240H(PA) and a 2M240H might be? I have a duff 2M240H(PA) from a Siemens branded microwave. £140 for the genuine part from the authorised spares vendor, £60 for generic on ebay clearly the cheaper one is more attractive.

trying to fix a dysfunctional booster-starter-charger. there is a large chinese relay (part nr WJQX-38F-2H) which has a funny little set of diodes which seem to ahve been connected across the coil terminals. I would have expected a diode in this position on a DC coil but Im not sure what the...

does SY cable have a practical place within any interpretation of a British Standard? what is it actually for? why does it *always* have a transparent outer jacket? in my own provincial orbit, the popular view is that it is Armoured Cable. I believe that it is strictly not armoured. I...

A friend has a Worcester green star heat slave ll, he diagnosed problem - weather had got into control PCB and caused a mains short on the PCB which destroyed part of the track. he took the PCB to me and I cleaned it up, repaired the tracks, meggered the mains input line which was OK at 250V...

I have an idea but I'm sure I am missing something possibly to do with efficient power transfer, hopefully some of the erudite contributors to this forum can comment: Consider a cheap "chinese" wind turbine. nominally 24V 400W, price about £140 ex ebay. They are what they are. Ive got experience...

please can I get a bit of help in reading table 4.4(i) in the OSG. Is the idea that you simply size the earthing conductor relative to the line/neutral conductors? I dont know how else you would do it but wanted to make sure my interpretation of the table is correct.

please can someone give me a steer on what 543.3.2 is? I cannot find it in my OSG. Context is "Condition and accessibility of main protective bonding conductor connections (543.3.2; 544.1.2) requires further investigation without delay." thanks

when did the familiar 13A plug get half-insulated pins on L & N?

please can wiser people comment on the below: if I ask for an Economy 7 tarriff, will the energy supplier arrange for a new meter to be installed? Does an economy 7 meter come pre-preogrammed with the low rate periods? can I get an aux output signal from the meter to enable me to...

I have a somewhat unusal residential supply question for an elderly friend (at least in my limited experience it is unusual) 3 phases entering the house I cannot remember the exact setup of the metering at the property (will update when I visit later in the month) but its something like this...

new requirements for fishing vessels. I am slightly perplexed, it seems that 4.8.2.3 indicates that we may be able to use eg a 48V test for a nominally 24VDC distribution arrangement as found on most fishing boats. or a 24V test for a nominally 12V vessel. But this would be in contradiction of...

I was trying to work out what precisely had gone wrong here. the problem was caused by fresh water running down a conduit and into the box. seems surprising that the RCBOs did not prevent the whole thing from cooking up in the fashion that it clearly has.

an elderly female neighbour was concerned that her EV charger (installed outside) no longer had a flashing blue light on it so asked my brother (who happened to be visiting at the adjacent property) to "have a look". also she had said that her smart meter usage monitoring panel had been...