Isolator in the outdoor electrical box

Rokmais · 2025-03-06T16:29:49+0000

Hi there,

I'm planning to replace the MCB on my outdoor electrical box with a better quality one, and since there is already an isolator installed by ESB Networks, as a DIY I can safely do it myself. My question is, about the isolator marked inside the orange circle. Does anyone knows what key should I use to rotate it to the OFF position and is there any safe procedure for that I should be aware before touching it?

Any advice on this would be greatly appreciated!
Thank you in advance

westward10 · 2025-03-06T17:04:01+0000

It isn't a key the switch knob assembly is missing.

Risteard · 2025-03-06T17:59:55+0000

These are Restricted Electrical Works. You must not interfere with the Main Overcurrent Device. By doing so you will be committing a criminal offence which is punishable by a fine of up to €50,000 and/or three years' imprisonment.

Only a Registered Electrical Contractor (REC) can carry out these works.