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

Options
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Sub main and TT

Grumpy
I am dismayed that I have to ask but it is so long since I worked in a TT area that I am doubting myself.

I'm running an SWA submain to an outbuilding so instead of the usual switch fuse should I be using a 100mA S RCCB and a 63A mcb?

The armoured passing directly through the outside doesn't necessitate a 30mA RCD does it (as I have been so advised)

Apologies and thanks.

Register to replyAlready registered? Log in and reply
Parents
  • 0
    Thank you both

Reply
  • 0
    Thank you both

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