protection

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  1. BodgeJob

    Does a main protective bonding conductor require UV protection when run outside?

    Hi there, Just a quick question. Does a main protective bonding conductor require UV protection when run outside? I am under the impression that this is not a requirement as such, but if possible, it should be considered. Especially if installing a smaller sized conductor. I am running a main...
  2. S

    Cathodic Protection Station with Switching Power Supply

    Cathodic Protection Station with Switching Power Supply for Buried Metal Structures Benefits of the Switchmode Cathodic Protection Rectifier: Can be installed in any existing CP (Cathodic Protection) cabinet. Optional integrated remote monitoring (data transmission). Increased output...
  3. O

    Fire alarm void protection location

    I'm about to start first fixing this fire alarm in the industrial unit we are wiring, at the moment its totally empty and eventually will have a grid ceiling in. The dimensions are about 12M x 5M and the loft space will be open. The (quite new) fire alarm that had been fitted (but ripped out)...
  4. samn420

    RCDs for fault protection in adibatic equasion

    Hi all Was looking in to the adibatic equasion as our company will not let us add on to a Ring circuit with 1mm cpc.. I want to give some evidence as to why it may not be an issue. My question is; If the circuit is protected by an rcd can I replace fault current in the adibatic equasion with...
  5. CopiamElectrical

    30mA Type A RCD Protection for EV Charger? Y/N? (TESLA Gen3)

    Afternoon everyone, I have a quick question about the Tesla Gen 3 Wall Charger? Does it require Type A 30MA RCD protection or not. Only because the Wall Connector features built-in RCD Type A + DC 6mA. I know we should be installing Type A 30mA protection however we also work with what the...
  6. happysteve

    Omission of fault (and overload) protection for inverter

    I don't "do" solar, but I've been asked to comment on an aspect of a new domestic solar installation by others. There is no overload or fault protection, except for the service cut-out fuse (unknown size, assume 80A). TN-C-S. Installation is as follows (have only seen a photo of part of it...
  7. punkin

    Surge Protection Device on old installations

    Hi I always thought installations were safe at the time of instalment etc, the Distribution Boards at my works were installed over ten years back. Our company just had its EICR done. The tester gave us a C2 for a number of DB’s which don’t have Surge Protection Device installed, these DBs with...
  8. A

    What are the regulations for PV consumer unit protection?

    I had a PV system installed by a local reputable manufacturer last autumn; since then, I've received conflicting advice regarding the consumer unit protection required. I'm hoping someone may be able to clarify the protection required by the regulations in place last October. I have a Solis S6...
  9. B

    Surge protection for solar

    Hi, We're looking at installing solar at a remote property which is on a TT system with out buildings supplied with underground cables (Stables, tractor sheds...) The array will be installed on one of these out buildings and I am trying to navigate 443.4.1 to assess if it requires an SPD on the...
  10. drewzh

    Do these internally exposed meter tails require mechanical protection?

    Hi, I was hoping someone with a little more insight might be able to shed some light on a potential issue I have, as I can't seem to find another example online where this specific question that has been answered. What you can see in the attached photograph is meter tails (single insulated +...
    • drewzh
    • Thread
    • ev charging exposed mechanical meter meter tails protection require safety tails these
    • Replies: 75
    • Forum: UK Electrical Forum
  11. Poolworx

    DC motor overload protection

    Hi all I just picked up an older 36 volt golf cart The speed controller is a curtis 36volt 350 amp I was wondering is there a way of protecting the controller if the motor went bad Thanks in advance
  12. 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...
  13. W

    Does a 32amp distribution circuit wired in SWA to a sub board need RCD protection ?

    For context i am in my 2nd year in college and my head is going round in circles a question in my project for which i need to select the right protective devices for : A 32A distribution circuit from the main board to supply summerhouse will have a four-way SP-N distribution board fitted...
  14. M

    UK RCD rating in Sub board less than suppy protection

    I have a 40amp RCD downstream of a 50a MCB (10mm csa cable) should the MCB be lowered to protect the RCD from overload? If so why does this not apply to RCD devices in Split Load boards
  15. W

    Do Distribution circuits require RCD protection?

    I'm doing a college design project and need to choose a suitable range of circuit protective devices for the whole contact. I've chosen and already done all the protective devices for all my final circuits but was curious if the distribution circuits need RCD protection aswell. The project...
  16. G

    UK RCD sockets regulation

    Can anyone tell me the latest regulation for RCD protection on socket outlets, I believe it's required for sockets up to 32A but I'm told it applies to all socket outlets, we have to install a 63A 5 pin socket located outside. Thanks in advance
  17. G

    Car battery protection w/rare car use

    Hi, I rarely (once a week or once in two weeks) use my vehicle and the car battery goes low, not enough to start. If I connect a 1Amp 12Volt charger to the battery just to provide power to whatever is slowly draining the battery, will it help? will it damage the battery? will it cause any...
  18. J

    Rccb protection of lighting circuits

    My 1990 property does not have the lighting circuits protected by the Distribution Board RCCB.Only the power circuits are protected.If I get a trip from the RCCB the lights stay on. Do I need to upgrade my system to include RCCB for lighting?
  19. 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.
  20. B

    PV and not and RCD protection.

    Had a customer ask for RCD to be changed to Type A as he has had a company install a PV unit which they have left with the spur switched off as new regulations state that PV units must have a type A RCD 🤔. Has anybody else had this situation??
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