My boss has just took over a new site and I went to look the layout. Some boards are damaged some cables need replacing and am sure some other stuff. The site has a old busbar with isolators feed various boards and of her isolators. It also has a board connected directly on to the busbar . The...
is it dangerous to use the cpc in a twin / earth cable? I know it's not safe in case someone else thinks it's still an earth but is that the only reason?
This is one of those slightly embarrassing questions that I feel I should know the answer to. I can feel the answer lurking under my skin but it's just not surfacing and needs a push!
Pre-work visit for a CU change. There was 65K Ω resistance between N-E on the continuity setting, however when...
I am in the process of buying a house and the previous owner has now decided he wants to charge us an additional £1200 for the security cameras and alarm system all wifi (originally came free with the house) and linked to their phone or he will rip it out and take it with him.
What i would like...
Wondering about T&E outside, not ideal we are told due to the UV rays overtime breaking down the outer sheath.
Saying that I come across quite a bit when house bashing that has held up well and shown good IR tests.
On a data sheet for some T&E I ordered was this little paragraph:-
"Not suitable...
Any electric motor, drill etc. plugged into any outlet is (suddenly) making my lights flicker.
Wired my house 5 yrs ago and of course all outlets are on separate circuits w 12g Rolex 20 amp breakers
All lighting is on 14g Romex and 15 amp breakers.
NEVER had an issue. Not the slightest...
I want a Breville Smart Oven Air: the Smart Oven Air® - https://www.breville.com/us/en/products/ovens/bov900.html
But they only seem to be available from countries which use 110-120V. It's 1800W.
Is the only option a huge transformer, and if so what specification would I need? And would...
Would it be possible to use a multi core SWA cable to run both a 230v supply to a certain area and also run several camera signal cables (both the visual and the earth/neutral) down the same SWA cable, or would having an AC current running down the SWA cause any interference to the cameras...
I'm going to look at a job on Monday and I'm not sure if there's any regulations that I need to think about.
The job is to install a wall mounted TV on a chimney breast, with the sky box and bluray player installed in the fireplace.
Now obviously the fire isn't in use, and the homeowners are...
I have gates with liftmaster sub 300m underground motors. 9 years old and worked like a dream. Now used internal open switch last friday and after 3 hours when I switched to close it TRIPS the RCD. Did some trouble shooting and tracked it to motor 1. Hooked up this motor to power supply, its...
Hello there
I have a panel i'm designing that contains inverter drives, Power supply and a UK Socket. I want to calculate the size of the Switch Disconnector needed using the current drawn from these components. I have 400VAC 3 phase & 1-Phase 230VAC. Here is a list of the components Current...
Hi, trying to work out how to put in figures to certify a sub-main install from origin to consumer unit using niceic online software...Tests all done but can't figure out how to make it look sensible for the certs!
Thanks
I am planning to put underfloor electric heating in one of the rooms with total power of 1100 watt.
Can I power up the thermostat and UFH (via thermostat) using the simple 13A plug in the socket? Of course I can hide wires using conduit or push it behind the plaster board.
Wondering that would...
Hi, I am asking for any advice on installing the ring doorbell pro. I am interested in installing it using a plug in transformer , as I have no existing hardwired doorbell and no space in my cu. I was wondering if anyone had installed the ring pro using this method (which you can do) and if so...
I've just been on phone with Hager designing domestic distribution board design. Engineer advised using Type D 63A in distribution board supplying CU to give better discrimination. Looking at tables anything over 10A on CU might also trip Type D, but it does give a better chance.
So I need to...
I want to use the armour as my CPC but need to check it complies. The cable will be run from a SP Distribution panel to CU.
As per Selection and Erection Guidance Note 1 table D10a I can see a 10mm XLPE SWA requires a 31.1mm csa to comply, but only has 26mm on 2-core.
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Evening gents, just seeking a little advice. Recently bought a new place, it has mostly been rewired, its on a TN-CS system. The garage which is approx a 40m run from the house is supplied by a 2.5mm cable believe it or not, it is donkeys years old. This supplies a 2 way rcd board in the garage...
Got asked today by someone one site regarding a friend who has come over from America and wanted to know if he could use his appliances /equipment in a 110v site transformer110v 55v to earth.Couldn't give him an exact answer as unsure , can anyone give me an answer.
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