Neptune
DIY
- Reaction score
- 24
Got some amateurish questions. Please excuse me but want to set this straight in my head.
Do amp ratings only matter when current is being drawn i.e. an appliance plugged in, light fitting, etc.
I would really appreciate your wisdom on the above scenarios. Thanks in advance.
Do amp ratings only matter when current is being drawn i.e. an appliance plugged in, light fitting, etc.
- To expand, if I have a 50amp MCB with a 1mm T&E cable going into a 5amp junction box, would that matter or would it have any adverse effects?
- If in the above example, I had a socket at the end of the cable and a heater plugged in, I assume that would be problematic as the 1mm cable isn't correctly sized
- Similarly, if I had a ring main where every point was terminated into 5amp junction boxes instead of sockets, I assume that would be fine too
- However, if one of the points had a socket and the socket had a fridge plugged into it, the 5amp junction boxes would be an issue as you now have a higher current being drawn through the ring.
I would really appreciate your wisdom on the above scenarios. Thanks in advance.