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 84 replies
  • Subscribers 32 subscribers
  • Views 22613 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

IET announces new amendment to BS 7671 (IET Wiring Regulations)

Lisa Miles
Hi all


Just read about this in the latest edition of Wiring Matters Magazine and thought it may be of interest!
Parents
  • 0
    SRCDS and SRCDs are intended for additional protection in case of direct contact, therefore they not intended for use when the Zs is to high to blow a fuse in the plug or connection unit, at the point they are connected into the main installation, for example in a TT installation.


    A TT installation has to have an upfront RCD, so you cannot install a SRCD in a TT installation where the circuit it is connected to lacks RCD protection, but there could be a 100 mA RCD upfront of the 30 mA RCD.


    Andy Betteridge
Reply
  • 0
    SRCDS and SRCDs are intended for additional protection in case of direct contact, therefore they not intended for use when the Zs is to high to blow a fuse in the plug or connection unit, at the point they are connected into the main installation, for example in a TT installation.


    A TT installation has to have an upfront RCD, so you cannot install a SRCD in a TT installation where the circuit it is connected to lacks RCD protection, but there could be a 100 mA RCD upfront of the 30 mA RCD.


    Andy Betteridge
Children
No Data

Community Rules & Guidelines