Shadowfax
Established Member
A short while ago I exchanged all the rewirable fuses in my Wylex CU for plug-in MCBs. I discovered this week that the transformer that reduces the power for our treadmill has a high enough inrush current to trip the 20 amp MCB. It is on a very small circuit with a couple of fridges and the treadmill on it - nothing else.
I thought I would try a 32 amp MCB but the result is the same. The MCB trips sometimes, as soon as the transformer is switched on but not every time.
I tried the transformer on a different circuit and the same thing occurs.
There is no fault with the treadmill, it is the transformer that trips the MCB with nothing plugged into it.
It is a 2KVa 115V thing similar to a site transformer.
I guess what I really need is a Type C MCB but Wylex do not make them in the plug-in type.
Any ideas?
For now I have replaced the 20 amp fuse and all is well.
I had forgotten til now just how much of an inrush current you can get with a transformer.
Cheers.
SF
I thought I would try a 32 amp MCB but the result is the same. The MCB trips sometimes, as soon as the transformer is switched on but not every time.
I tried the transformer on a different circuit and the same thing occurs.
There is no fault with the treadmill, it is the transformer that trips the MCB with nothing plugged into it.
It is a 2KVa 115V thing similar to a site transformer.
I guess what I really need is a Type C MCB but Wylex do not make them in the plug-in type.
Any ideas?
For now I have replaced the 20 amp fuse and all is well.
I had forgotten til now just how much of an inrush current you can get with a transformer.
Cheers.
SF