KeepItSimpleStupid
- Joined Mar 4, 2014
- 5,088
A short on a doorbell transformer is not likely to blow a fuse, They are typically designed to be energy limiting.
The transformer design won't help if the primary short to the case somewhere between 0 and 120V. In an audio amp I was servicing, that precisely happened. No fuse blew because it used a 2 prong cord. So, the metal chassis/knobs were say at 60VAC.
There is reasons, at times, to fuse both.
Fuses primarily protect the wiring.
The transformer design won't help if the primary short to the case somewhere between 0 and 120V. In an audio amp I was servicing, that precisely happened. No fuse blew because it used a 2 prong cord. So, the metal chassis/knobs were say at 60VAC.
There is reasons, at times, to fuse both.
Fuses primarily protect the wiring.