Originally Posted by S2udio
Chinese imported cable
The Sundial cloth covered cable is made in the United States (it's still "imported" if you live in the UK) and uses polyvinyl chloride insulation
, unlike the old 1930's cloth over natural rubber which becomes brittle and dangerous. Non-cloth covered PVC insulated wire is "today's most widely used electrical insulation material" . It's very unlikely that adding an additional layer of braided cotton or rayon fabric over the already excellent insulation poses any additional safety issues compared to a much more common single layer of PVC.
Wire of 18 ga. is rated for 2.3 amps for continuous power transmission applications. That's 265 watts on 115 volt mains. Even an old, inefficient 50 watt guitar amplifier won't be using anything like that much power. It's unlikely the amp will draw more than 1 ampere average current.
25 feet (8 meters) of 18 ga. 2-conductor power cable will have a total drop (calculated from the resistance of both conductors in series) of 3.15 volts(@1 Ampere). That slight line drop should easily be tolerated by any guitar amp.
The inductance created by ugly Ferrite beads have will have much more RFI rejection than the cool, retro cotton or rayon covering which only blocks pre-1960 radio waves.
Unless you have known radio frequency noise sources nearby, or noisy stage lighting dimmers, there is no need for ferrite beads on a power cable, and besides they ruin the whole retro look. Note: If you use a weave-covered power cable, a woven guitar cable
is mandatory or you'll drop your coolness factor by at least 6 dB.
Just do it!