Apprentice electrician (coming towards the end of my 1st year) here and looking for some help and understanding.
I have moved into my flat and I have both a normal CU running 24/7 and an off peak CU.
The flat has no gas and all electric. I have a hot water cylinder which has 2 immersion heaters in it. One near the top and one near the bottom. I am guessing the bottom one is the economy one which only comes on at night and the top one is for when I hit the boost button?
The controller is in the kitchen which is a horstmann economy 7 quartz. This then goes to a single FCU which has 2x 1.5mm flex's in it, one for the top and one for the bottom heater. FCU is fed by a 2.5mm cable.
The 13amp fuse is has blown. I tried changing it and it blew again, then the MCB, 16amp tripped also. On making sure all the connections were ok, every cable was very hot. The new cylinder was installed in November last year apparently.
Now I have no hot water what so ever.
Should the economy heater not be on its on supply from off peak CU? Am I better rewiring this? Off peak CU to off peak heaters via a 20amp double pole switch and a new supply from the 24/7 CU to a FCU, to a controller then to the top heater?
Cheers.
I have moved into my flat and I have both a normal CU running 24/7 and an off peak CU.
The flat has no gas and all electric. I have a hot water cylinder which has 2 immersion heaters in it. One near the top and one near the bottom. I am guessing the bottom one is the economy one which only comes on at night and the top one is for when I hit the boost button?
The controller is in the kitchen which is a horstmann economy 7 quartz. This then goes to a single FCU which has 2x 1.5mm flex's in it, one for the top and one for the bottom heater. FCU is fed by a 2.5mm cable.
The 13amp fuse is has blown. I tried changing it and it blew again, then the MCB, 16amp tripped also. On making sure all the connections were ok, every cable was very hot. The new cylinder was installed in November last year apparently.
Now I have no hot water what so ever.
Should the economy heater not be on its on supply from off peak CU? Am I better rewiring this? Off peak CU to off peak heaters via a 20amp double pole switch and a new supply from the 24/7 CU to a FCU, to a controller then to the top heater?
Cheers.