Fridge & Freezer Radial - B or C curve on RCBO? Discussion ThreadFridge & Freezer Radial - B or C curve on RCBO? Electrical Advice
Hello,
Please help settle a mental ponderance.
What is the collective opinion on curve ratings on a 20A RCBO feeding two Radial feeds in 2.5 T&E, one going to a dedicated under counter socket (via DP isolator above counter) for a Freezer and the other doing the same but for a full height fridge. Could this sensibily be a C curve - in case both fire up their compressors simultaniously, or would this be silly and a vanilla B curve is ample / safer.
Obviously this is a circuit you would not want to nusance trip. It is also only domestic fridges / freezers so 20A B curve should do the job, but I can't shake the idea that when cooking you are likely opening and closing the doors fairly regularly and hence the opportunity for both to start together is heightened?
Should the radials be seperate, but then the old argument that if the freezer trips, would anyone notice? Plus this eats another way in the CU and seems a bit excessive really...
For that matter, is there in fact any call for a C curve MCB / RCBO in a domestic dwelling nowadays that incandescent & LV transformer lighting is mostly out the door? Garage Door Opener? A/C Unit? Boiler?
Many thanks for your thoughts...!
Fridge & Freezer Radial - B or C curve on RCBO? for the original thread on Electricians Forums
Hello,
Please help settle a mental ponderance.
What is the collective opinion on curve ratings on a 20A RCBO feeding two Radial feeds in 2.5 T&E, one going to a dedicated under counter socket (via DP isolator above counter) for a Freezer and the other doing the same but for a full height fridge. Could this sensibily be a C curve - in case both fire up their compressors simultaniously, or would this be silly and a vanilla B curve is ample / safer.
Obviously this is a circuit you would not want to nusance trip. It is also only domestic fridges / freezers so 20A B curve should do the job, but I can't shake the idea that when cooking you are likely opening and closing the doors fairly regularly and hence the opportunity for both to start together is heightened?
Should the radials be seperate, but then the old argument that if the freezer trips, would anyone notice? Plus this eats another way in the CU and seems a bit excessive really...
For that matter, is there in fact any call for a C curve MCB / RCBO in a domestic dwelling nowadays that incandescent & LV transformer lighting is mostly out the door? Garage Door Opener? A/C Unit? Boiler?
Many thanks for your thoughts...!
Fridge & Freezer Radial - B or C curve on RCBO? for the original thread on Electricians Forums
