Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 34 replies
  • Subscribers 32 subscribers
  • Views 4788 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

18th question.

Former Community Member
Former Community Member
Hi all, any comments welcome on this one.
Is it still acceptable to have a socket outlet for a specific use not rcd protected under the 18th?
I fitted a single 13a socket outlet recently in a loft space for one of my regular customers, it is to supply a security camera system and the suppliers asked for a socket to be provided. It is supplied from the first floor lighting circuit which doesn't have rcd protection. (16th. ed. board) There is not the slightest chance of the socket being used to supply anything else and I would like to issue a mwc stating that the socket is only to be used for this specific purpose. If it's a major issue I could get back to the customer and arrange to fit an rcbo but I don't really think that is necessary? Thinking now about going back to change socket for an rcd protected one?
Parents
  • 0
    Presuming that the C.C.T.V. system is supplying its cameras at extra low Voltage and is probably earth free as well, there is little shock risk in supplying the new socket from the existing lighting circuit. The C.C.T.V. system may also be a Class II system which needs no earthing. Would we need a R.C.D. protected socket for a t.v. loft aerial amplifier supplied with a two core flex for safety reasons?


    Table 52.3 requires a minimum cable size of 1.5mm2 for "power" circuits as opposed to a "lighting" circuit.


    Although people often miss NOTE.4:"For Lighting circuits AND associated small items of current using equipment, such as a bathroom extractor fan". 1.0mm2 can be used.


    You could wire in the C.C.T.V. recording unit via a switched fused connection unit fused at 3 Amp. from the lighting circuit. I would.


    Do the manufacturers require the C.C.T.V. equipment to be protected by an R.C.D?


    It is quite possible that we could apply the exception in 411.3.3 where the requirement for an R.C.D. can be done away with for FELV and reduced Voltage systems. NOTE. 3: "A lighting distribution unit complying with B.S. 5733, luminaire track system, LSC or DCL is not regarded as a socket outlet for the purpose of this regulation."


    Sometimes common sense is required in applying the regs.


    Will the loft get too hot for the recording unit or power supply in the summer and damage it?


    Z.








Reply
  • 0
    Presuming that the C.C.T.V. system is supplying its cameras at extra low Voltage and is probably earth free as well, there is little shock risk in supplying the new socket from the existing lighting circuit. The C.C.T.V. system may also be a Class II system which needs no earthing. Would we need a R.C.D. protected socket for a t.v. loft aerial amplifier supplied with a two core flex for safety reasons?


    Table 52.3 requires a minimum cable size of 1.5mm2 for "power" circuits as opposed to a "lighting" circuit.


    Although people often miss NOTE.4:"For Lighting circuits AND associated small items of current using equipment, such as a bathroom extractor fan". 1.0mm2 can be used.


    You could wire in the C.C.T.V. recording unit via a switched fused connection unit fused at 3 Amp. from the lighting circuit. I would.


    Do the manufacturers require the C.C.T.V. equipment to be protected by an R.C.D?


    It is quite possible that we could apply the exception in 411.3.3 where the requirement for an R.C.D. can be done away with for FELV and reduced Voltage systems. NOTE. 3: "A lighting distribution unit complying with B.S. 5733, luminaire track system, LSC or DCL is not regarded as a socket outlet for the purpose of this regulation."


    Sometimes common sense is required in applying the regs.


    Will the loft get too hot for the recording unit or power supply in the summer and damage it?


    Z.








Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines