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  1. 1capybara

    WIRES BETWEEN PANELS PROTECTED ON LINE SIDE ONLY, not by load side breaker?

    Is This is an America code [NEC] code thing only? Or does 17th edition or IEC have the same thing? A wire runs between 2 panels is rated to carry 400 amps. Its fed from a 600A breaker on the line side, and has a 400 Amp breaker on its load side [the panel being fed from the other one]. Under...
  2. M

    Loft Radial Circuit...

    Hi, i would like to add some extra sockets to my loft , on inspection of the existing cct installed in the loft it looks like its a radial that has been taken from the upstairs ring, spured from the back of a bedroom wall socket. I know this is not ideal but if i was to add a Fused RCD socket to...
  3. C

    Lighting circuits not protected by RCD

    Just carried out an inspection on a domestic property - there is RCD protection on the sockets, water heater & Garage supply but no RCD protection on the lighting circuits & cooker. Just wondering what code to attribute to this - thinking code 4??
  4. H

    Multi Plug Socket Saftey

    Can I plug multi socket extensions into a 5 Way Plug Socket Extension Adapter Surge Protector. For clarification purposes can I plug one of these: 4 way switched extension, 5.0m: Amazon.co.uk: Kitchen & Home into on of these: New 5 Way Plug Socket Extension Adapter Surge Protector...
  5. B

    Zs reading across RCD

    Hi all with a heathy ZE ..22 on a TN-s system i had a R1+R2 of .40 oh my suprise to find that the Zs was 1.01at the furthest socketrechecked my ZE.22?? rechecked ZE from out going terminals of RCD .60 has any one else found this ps i realise that this reading is fine as RCD protected just...
  6. K

    periodic inspection report

    We did a 5 yearly periodic inspection report on a care home a few week ago that was built in “august 2005” the only RCD protected circuits we found was for the out side sockets, none of the sockets inside had any so what would you guys recommended for this if any, Cheers lee
  7. stidge

    RCD Advice

    hi all, Am i right in believing that if i install An RCD controlled garage cu fed from Dual RCD Cu i will cause problems with unwanted tripping???? It is not possible to come off unprotected side. Any advice much appreciated
  8. N

    Compressor Trips RCD

    Hi Everyone Had to replace an old Re-wirable fuse board last week in a small industrial unit, replaced with a split load board, originally had the compressor wired into the RCD protected side and everytime the compressor started it tripped out the RCD. I have since moved it to the other non...
  9. G

    Bathroom not RCD protected

    Hi, I have been asked to replace a bathroom light, the current circuit is not RCD protected and is connected to rewireable fuses. Do I need to install a new CU with RCDs or can I replace the light and connect it to the existing CU and issue a minor works cert.
  10. B

    Coming off a 3 phase supply

    I have been asked to carry out a job and would like to know if anyone can see any problems with what I intend to do 3 phase and neutral car lift supplied via 2.5 mm cable protected by 3 phase 20amp mcb I intend to come off 1 phase to supply a 13amp rcd protected twin socket to supply drills...
  11. N

    Testing an RCD (garage)thats protected by an RCD (house)

    Hi I am quite new to all this testing so if the answer is obvious then I apologise. I have installed a new CSU in my garage and rewired the lighting and sockets. My problem is that when I test the RCD the main RCD in the house is tripping 1st before the new one in the garage. I am using the...
  12. D

    MCB Tripping on unrelated circuit

    Good morning to everyone reading this. My first post so please be gentle with me ;) I'm reasonably new to this business and have been asked to investigate a fault which I will describe below. I haven't yet seem the installation so some info is a little sketchy still. An electric shower...
  13. R

    Outside Socket

    Hi there, This is my first post hope you can help. I have been asked to fit an outside socket so was going to split the kitchen ring main and loop to the outside socket then back to the kitchen ring. The CU is single RCD portected for all circuits and the outside socket is IP56 with RCD...
  14. R

    Outside double socket off ring main

    I have been asked to put a double socket outside. I have a ip66 rated protected double socket with built in RCD. I was thinking of just coming straight out back of lounge socket (ring main with rcd at cu protected) through wall into back of outside double socket on the other side. Can this be...
  15. W

    Best cable for the job?

    Hello. Customer wants 6 bulkhead lights running down a garden wall about 15-20 meters long to illuminate the path. I plan to fit a switched fused spur from a socket in the dining room, through the wall into a weatherproof switch 1G 1W, then radial circuit for the lights. Typical customer...
  16. H

    RCD Protection requires or not?

    Hi there all, I've been asked to do some work in a recently refurbished college, It was fully rewired and a very descent job was carried out indeed, however there is no RCD protection :confused:... When I questioned the caretaker within the premesis he informed me that the installatio...
  17. sythai

    Sub main RCD or not?

    Recently had to install additional fuse board for extension. Spilt tails at source, henley blocks and installed 100A switched fuse to supply new board which is located other side of house. 25mm tails are 10m long, done calc all ok, and checked with local DNO all ok. Got the tails up the...
  18. D

    RCBO advice

    hi, I am installing some Lutron (smart dimmable scene) lighting in a penthouse flat and would like your advice on circuit breakers. All the wiring is above the suspended plasterboard ceiling and 'batwing ' clipped to concrete 250 mm above. There are no switch drops as all switching is done by...
  19. S

    No RCD protection...

    If I was to install a new shower for someone using an rcbo as theres no rcd protection would this be ok? What i mean is am I ok as long as the circuit I have installed is protected? Or would it be up to me to make sure there was protection for the other circuits?
  20. U

    4 Core SWA - 2 Cores RCD protected, the other 2 not ...

    Hi guys SWA feeding outside lighting and socket outlets etc. Set up like this: Single phase. L & N T&E out of MCB in main board to feed sperate enclosure with only an RCD module in. So L&N feeding an RCD. Then, 4 core SWA is glanded to this board. 2 of the cores (L/N) connect...

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