spd

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  1. O

    Does SPD MCB size matter?

    Does this matter? I've fitted a Fusebox consumer unit and I didn't have enough 32A MCB's but too many 6A's. The SPD is fed from a 32A one, what's the deal with swapping them around. They are voltage operated not current operated so should be fine right?
  2. K

    Consumer unit rcbo spd price

    Evening all . Just a quick question what do you guys typically charge for an rcbo spd consumer unit change 14 way . 10/11 rcbos few spare ways . New meter tails . All certified /notified Cheers
  3. cliffed

    SPD on the New EIC Certs

    Just a quickie the new amendment certs now have tick boxes for the SPD… would you still add it to the schedule list for the DB… ie: At the top of the schedule with the the Mcb protecting the SPD then the associated circuits for that DB/CU
  4. ionionascu

    UK Is an SPD required for a loft conversion?

    Hi. We live in an older house and we are doing a loft conversion. We do not have an SPD on the connection to the grid and the builder's electricians insist that we must have one, otherwise he can't sign the certificate, but he doesn't want to give me a reason. We have a few consumer units under...
  5. R

    Do SPDs need RCD protection ?

    Hi there , Currently doing a college project where i need to select protective devices for the contract. I'm now at the point of selecting SPDs and had a couple questions. I have chosen MCG RCBOs for my circuit breakers in this project for all my boards apart from the board supplying...
  6. I

    New SPD Regs for Sub Main

    Now that SPD's must be fitted regardless, how does this stand from a sub-main perspective? Went to look at a job and they want a supply to a pre wired Shepherds hut 50M away with no SPD as it has been sat unconnected for a couple of years. The main incoming is entering an old barn that has a...
  7. I

    SPD on RCD acceptable or not?

    Inspecting and testing a consumer unit as part of my training and have noticed that the circuit breaker for the SPD is on the RCD? I am unsure weather this is acceptable as I haven't come across this configuration and I am pretty new understanding SPDs could one of you more experienced people...
  8. P

    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...
  9. I

    UK SPD in Existing metal clad CU?

    Hi all! Does an SPD have to go at the front end next to the main switch or can it be fitted with its MCB at the end of the row of MCBS on an existing CU to the far left? EG main switch on the right, end of MCB row on the left will have the OCPD for the SPD, and then the SPD sat to the left of...
  10. O

    different make SPD in consumer unit

    Is there a reg anywhere that states that you have to use the same make SPD inside a consumer unit. I know there are with MCB's as they obviously have to sit on the same bus bar but an SPD just slots in and has flexible cables wiring it up.
  11. newfutile

    Surge protection device failure mode

    I have come across a failed SPD, I thought I would take it apart and post pics for people to discuss. It appears to work by melting an alloy or type of solder to break the connection. I guess this is after the MOV decreases its resistance and increases the current.
  12. R

    Spd from main switch

    Hello all, i am fitting an Spd to an existing installation and looking through installation instructions and it has a diagram where the feed for an Spd located externally has come from the bottom of the main switch. Does not seem right to me. Just wondered what people’s thought were on this. I...
  13. Q

    SPD coding on an EICR

    Hi All, just carried out an EICR on a rented property that has mains smoke detectors, there is no SPD fitted and as I understand any safety service should be protected by an SPD, what code would you give this.
  14. T

    SPD Mains Isolator wylex/Proteus

    Hi, I was wondering if the wylex/Proteus SPD Isolators where dual isolator, they have 4 terminals at the bottom, can you use them to take 2 sets of tails of them. And what size earth should be used for the SPD when using 25mm tails and Is connecting it in parallel to the main earth correct...
  15. S

    SPD for TPN 100a sub mains

    Hi Guys, Looking for some options to provide surge protection to a 100a TPN sub main to be wired 60m from the origin Im currently looking at installing a 4 way TPN mccb panel board with spd at the origin but it looks as if its going to cost the best part of a grand This is obviously a far...
  16. W

    Type 1 SPD and over head lines

    Hi all i have just recently watched the NAPIT webinar on SPD’s and it says a Type 1 SPD device should be installed in premises supplied by overhead lines I’m assuming including domestic properties up to now I have only been using type 2’s in the consumer unit is everyone fitting type 1 in...
  17. V

    Is there a way to test a SPD without spending thousands ?

    I know there are many MFT's out there which can test SPD's, but they all cost thousands of pounds, and I personally can't justify that cost which currently isn't mandated. However it would be nice to know that when I install a SPD that it will function. Is there a way of testing such a device...
  18. S

    Type 2 SPD (equipment 10meters or more from spd)

    Need advice please, I've been reading alot on spds and came across this, please read the picture I have posted, I am querying "equipment" if the type 2 spd is installed say before the fuseboard in a separate enclosure are we then classing the fuseboard as "equipment" and will the spd then...
  19. newfutile

    Amendment 2 smoke alarms and SPD

    I know this has been brought up before but as a QS for a housing association ,i have been asked my opinion on interpretation of the regulations concerning SPD with smoke alarms (assuming they are a safety service). several scenarios exist here : 1. Upgrading or updating existing alarms (ie...
  20. W

    What cert is best for a new spd install?

    Brand new spd installed new tails, saying minor works is ok, I don’t believe so as tails are coming from metering supply via Henley blocks
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