Choosing the correct value of fuse
Replacing the fuse in a Russ Andrews power cable
Where possible, ensure that a 13A Russ Andrews fuse or SuperFuse™ is fitted to our PowerKords. All new Russ Andrews power cables are fitted with Russ Andrews-brand 13A fuses as standard (older models may not be fitted with a Russ Andrews-brand fuse, but it will be a 13A fuse). Our power cables are all rated at 13A; a 3A fuse wouldn't be safer. Do not be tempted to replace the plug's 13A fuse in our PowerKords with a 3A fuse - it will only degade the sound further than the 13A one by increasing the impedance.
You may notice a label covering the screw on your Russ Andrews mains cable with 'Warranty - Void if Removed' or 'Fitted with Russ Andrews Fuse' written on it. This is to discourage unnecessary tampering of the cable and plug. Changing the fuse however, is straightforward and requires no special skill but you will of course need to remove the label to open the plug.
The Russ Andrews fuses and SuperFuses are supplied with a 'Fitted with Russ Andrews fuse' or 'Fitted with SuperFuse' label to fit over or replace the existing warranty label. If you replace the fuse and then stick the new label over the old warranty label, we'll know that you've simply replaced the fuse if you return the cable for upgrade or repair in the future. It's also a useful way for you to know which cables you've upgraded with our fuses.
You will not void your warranty if you simply replace the fuse.
Replacing the fuse in another manufacturer's power cable
If you want to replace the fuse in another manufacturer's power cable - either an aftermarket one or perhaps the cable that was supplied with your component - it's important to replace like for like. If the other cable is rated at 10A or 5A, it will be fitted with a 10A or 5A fuse respectively and you should fit a replacement fuse of the same value.
The purpose of the fuse in a mains plug
The mains plug fuse cannot protect against faults in Hi-Fi equipment because currents are too low and the impedance in the mains cable is much too high. For equipment protection, rely on the internal fuse the manufacturer fitted into the equipment. This will be a fuse of about 180mA to 500mA for preamps, CD players streamers etc. and a 1.5A to 3.15A fuse for power amps. It's also worth replacing these internal fuses; most are 20mm in length and we have high quality Russ Andrews internal fuses available. View all fuses here.