Hi - I want to add a new ring and MCB to my existing Hagar CU. I have spare slots for this and understand what's involved.
My question is how to isolate the CU before opening and working on it. I assume that just switching off the master red switch in the CU is insufficient for complete safety.
Looking at my meter cupboard there doesn't appear to be a master whole house on/off switch. House built in 1999.
Appreciate your advice on this
Thanks
My question is how to isolate the CU before opening and working on it. I assume that just switching off the master red switch in the CU is insufficient for complete safety.
Looking at my meter cupboard there doesn't appear to be a master whole house on/off switch. House built in 1999.
Appreciate your advice on this
Thanks