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
  • Replies 13 replies
  • Subscribers 37 subscribers
  • Views 2590 views
  • Users 0 members are here
Options
You may also be interested in

EICR Coding for main isolating switch

Northern Spark

What would the code be for an isolator switch of a distribution board not having any indication of its position(on or off)?

There are two distribution boards at the origin, one is off when down, the other is off when up. One isn't labelled or marked any way.

Also, would you code for no single point of isolation for the whole installation?

Parents
  • 0

    In my vie simply marking ON/OFF or 0 and 1 would be fine and I consider that regarding this as a  modification is over pedantic.

    Every installation needs a single point of isolation, but more than one installation is permitted in the same building. So no code needed for the two main switches.

  • 0 in reply to broadgage

    As very few of the general public will have the iso guide to switch symbols to hand, in an English speaking environment, I'd strongly prefer the words "on" to indicate the on (alive) position and "off" for the off (dead) position. (I have no problem with ein / aus for Germans.. ).

    Why a completed circle should indicate a broken circuit has never been especially intuitive to me, and and allusions to binary are wonderful but in many systems I have seen the switches are actually wired as active low, open pull-up, as that  saves taking power to the front panel.
    Mike.

Reply
  • 0 in reply to broadgage

    As very few of the general public will have the iso guide to switch symbols to hand, in an English speaking environment, I'd strongly prefer the words "on" to indicate the on (alive) position and "off" for the off (dead) position. (I have no problem with ein / aus for Germans.. ).

    Why a completed circle should indicate a broken circuit has never been especially intuitive to me, and and allusions to binary are wonderful but in many systems I have seen the switches are actually wired as active low, open pull-up, as that  saves taking power to the front panel.
    Mike.

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