protection

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  1. Dogmatic1983

    Protection in Multi Meters

    I would like to get some information on what protection is on a multi meter when accidentally testing a live circuit while the meter is on the ohms range? I seem to be getting different sides to the argument. One side says that there is no protection against this other than a audible warning...
  2. M-B-Electrical-Services

    RCD protection for a temporary 16A commando socket outlet

    Hi all, Just a quick one regarding the need for RCD protection for socket outlets rated up to and including 32A. I have been tasked to install temporary power in the form of a single 16A commando socket outlet for the purpose of feeding a boiler to maintain heating in a building owned by the...
  3. SJD

    Surge protection devices for PME supplies?

    I've been installing Type 2 SPDs in consumer units for several years now, and they always come as a pair, connected across L & E, and across N & E. Typically they plug into a holder, sometimes as two separate SPDs (e.g. Hager, with separate E connections), more often now as one combined SPD...
    • SJD
    • Thread
    • devices pme protection supplies surge surge protection
    • Replies: 2
    • Forum: UK Electrical Forum
  4. B

    UK 3 phase rcd protection

    Hi everyone, I have been asked to pull in some new 3 phase supplies for 7 new welders which do not require a neutral connection. The client has specifically asked for them to be plug and play and rcd protected, which is fine as they are under 32amps. I will be running in 5 core swa's for...
  5. P

    Can I add PIV to lighting circuit with no RCD protection?

    As I've mainly done site work and moved into domestic recently, I'm a bit rusty on stuff like this, but if I'm adding a loft PIV unit to an existing lighting circuit via an unswitched fused spur, if the lighting circuit has no RCD protection am I allowed to install it? Same question for if...
  6. 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...
  7. 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...
  8. 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)...
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. D

    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
  16. 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
  17. 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...
  18. 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...
  19. 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
    • misterpotski
    • Thread
    • board mcb protection rating rcd
    • Replies: 4
    • Forum: UK Electrical Forum
  20. 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...

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