Hi, please bear with me as I’m really not very competent with electrics etc.
I have night storage heaters which I know how to set etc to get the best out of them (years of trial and error), the only thing I can’t get with my new house is which way do I switch the electric box? It has 2 switches: Off-peak Supply off/on and Normal Supply off/on. I’ve posted a photo as I know I’m not explaining this well. I’d really appreciate your assistance.
I have night storage heaters which I know how to set etc to get the best out of them (years of trial and error), the only thing I can’t get with my new house is which way do I switch the electric box? It has 2 switches: Off-peak Supply off/on and Normal Supply off/on. I’ve posted a photo as I know I’m not explaining this well. I’d really appreciate your assistance.

