conductor

# conductor

1. ### DAY 3 Lightening conductor

Another snap taken in Poland of a castle, the lightening conductor up the building (crude at that), you can see that they have bonded the iron window bars off it as well. I know this is a specialist area my knowledge is zero, your thoughts please.
2. ### Calculate the appropriate size of the protective conductor exam question

fault = 400 A Operating time of protective conductor = 0.15 s Constant k, for the material of the conductor = 134 a 1.5mm b 2.5mm c 4.0mm d 6.0mm Just want to make sure I've got this right,
3. ### SWA and separate conductor as CPC

Evening all, Having a debate with a colleague about using the SWA armouring and a separate conductor both as CPC's for a circuit. So in theory bringing down the Zs of a circuit due to using both as CPC's. I'm swaying to thinking this is wrong however, I'm struggling to find any regs to express...
4. ### Main Eearthing Conductor - Fabric ????

See picture below the Main Earthing Conductor is some kind of Fabric?
5. ### SPD Conductor Size Question

Hello, I have a Leviton 51120-1 SPD connected to a residential (120/240V) 200A breaker/service main panel – The 51120 is fed from (2qty) – 20A breakers in the service panel – All wires connected to the 51120 (L1&L2 hot, neut,& ground) are 12 AWG stranded conductors – The install instructions...
6. ### EMT conduit fill cable versus conductor, and receptacle for 30AMP 240.

Hello DIYer here, Seeking advice on running a 240V 30AMP circuit to an air compressor in the shop. Roughly about 25 foot run from panel to location of compressor. Have 8/3 cable with 3/4" emt for surface mount run. Can I place the sheathed 8/3 cable inside the EMT or do conductors need to be...
7. ### Demista pads powered by a 24v SELV transformer, with cabinet hinge used as a conductor

I'm working on a site in the UK where a joinery company will be installing bespoke vanity cabinets. The cabinets will have MDF/mirrored doors with a demista (heated pad) laminated between the mirror and the MDF door. The Demista is powered by a 24v SELV transformer, located behind a small panel...

9. ### Neutral Conductor Size - Main Switch to Neutral Bar

Don't come across this very often - but I've had a CU delivered for a caravan job (not static btw), and it's been supplied with a neutral conductor from the main switch to the neutral bar! Definitely an oversight, but I've got plenty of singles cable in stock, so rather than send it back, I...
10. ### UK Selecting bonding conductor size

This is a question (or discussion probably) regarding selecting the main earthing conductor, and subsequently the main equipotential bonding conductor sizes in a TNCS installation. We are fitting a replacement consumer unit only. The property currently has 4mm bonding cable installed to gas and...
11. ### Swapping solid conductor in lewden board for flex

Hello, I've worked on a few old lewden boards recently and the quality is terrible. When fitting rcbos in 16th edition boards there's a solid bar that gets in the way of the taller device and they go in wonky enough as is. I was considering swapping it for a 100A flexible link, are any of you...
12. ### Suspected Broken PEN conductor on TNC-S system

Hello everyone, I’m based in the ROI and live in a rural location. Yesterday evening my electricity supply started to switch on and off randomly. After waiting for the evening for it to come back on it still has not. I checked my neighbors who are on the same DSO as my house and they all have...
13. ### Can I use a 6 conductor wire to solve this problem?

I have Nanoleaf LED light strips that I need to go around a corner and also bridge a blank space. Nanoleaf is always sold out of the extender wires and the generic ones on Amazon get bad reviews. These specific lights are different than most and have 6 pin connectors. Can I get standard 6...
14. ### Insulation resistance test on a damaged conductor

I have a 2 metre T&E cable. I applied a IR test (500v) across P and N to E with the other end of the cable safely sitting on the floor and it reported the meter maximum. As expected. I then completely cut through the N conductor on the cable and repeated the test. It still reports the meter...
15. ### Electrical size conductors and conductor rating

Hello, I’m building a wood shop. I’m planning on installing 240 and 120 outlets. I plan to connect to my supply panel using a 90 amp breaker. They’re run to the shop is 140 feet. I will use 2” underground conduit. I’m just not sure what size and what rated copper conductors to use. I used...
16. ### Decomissioned gas pipe as a bonding conductor?

What do you guys think about using decommissioned gas pipe which is welded throughout and 4" industrial in steel. I am clear on regs that say you cannot utilise a gas, oil or water pipe as a bonding conductor but this would effectively safe a lot of time and money.
17. ### No continuity of neutral conductor

On the sockets ring. What you advise, go round all sockets? Checking netruals
18. ### Main Earthing conductor max resistance?

I know main bonding to water and gas need to be 0.05 ohms But what about the main earthing conductor? Does it have a maximum resistance value from MET to the CU?
19. ### 25 mm tails as a CNE conductor

During an EICR i have found from the ryefield to each cut out wired in 25mm tails . one of which is used a CNE conductor which is then split in the cut out housing to form a usual PME supply TNC-S. i guess this was done by DNO or BNO . is this safe and acceptable ?
20. ### Which conductor colours to use?

If sleeving conductors at both ends, does it really matter which underlying conductor colour is being used for what? Background is that I’m installing an electric boiler into a commercial building for a charity. The boiler is single phase, 12KW, 63 amps rated with 10mm conductors specified. The...