Would sub main cables run externally on tray require the same SPD protection (ie. Type 1) as overhead cables?
I would guess so, but I've been asked the question.
Type 2 will be fitted at the distribution boards.
Would sub main cables run externally on tray require the same SPD protection (ie. Type 1) as overhead cables?
I would guess so, but I've been asked the question.
Type 2 will be fitted at the distribution boards.
Do the cables have an earthed armour or shield?
- Andy.
Yes...they are run in SWA.
Yes...they are run in SWA.
We're about to take you to the IET registration website. Don't worry though, you'll be sent straight back to the community after completing the registration.
Continue to the IET registration site