Radial Voltage Drop Calculation?... By Load or MCB Rating?

So maybe SY or SWA for this?

It's nigh on impossible to say at a distance. We still don't know about the temperature requirements for connection to the immersion heaters (either at the terminal or ambient next to the tank), nor other environmental conditions (wash down for instance) or 101 other factors - as we can't see the situation.


The steel braid of SY might give you a little extra mechanical protection, but generally it's not substantial enough to act as a protective conductor, so can't be relied upon to offer shock protection if the cable is damaged through to the live cores.  Neither SY nor SWA have any particular heat resisting qualities. It might be that some heat-resisting cable plus some additional protection (say in flexible conduit) might be more appropriate. Or maybe something more substantial is needed to protect from impact damage (e.g. steel crash barriers) - if large heavy hard thing with sharpish corners are moved about carelessly. We just can't tell from here.


Unfortunately cable selection isn't trivial - especially once you move out of the common domestic/office type settings. They actually write text books on this kind of thing (e.g. https://shop.theiet.org/guide-to-cables-and-cable-management) - and even those only tell you the sort of parameters to consider rather than saying "type x cable will be OK".


   - Andy.

So maybe SY or SWA for this?

It's nigh on impossible to say at a distance. We still don't know about the temperature requirements for connection to the immersion heaters (either at the terminal or ambient next to the tank), nor other environmental conditions (wash down for instance) or 101 other factors - as we can't see the situation.


The steel braid of SY might give you a little extra mechanical protection, but generally it's not substantial enough to act as a protective conductor, so can't be relied upon to offer shock protection if the cable is damaged through to the live cores.  Neither SY nor SWA have any particular heat resisting qualities. It might be that some heat-resisting cable plus some additional protection (say in flexible conduit) might be more appropriate. Or maybe something more substantial is needed to protect from impact damage (e.g. steel crash barriers) - if large heavy hard thing with sharpish corners are moved about carelessly. We just can't tell from here.


Unfortunately cable selection isn't trivial - especially once you move out of the common domestic/office type settings. They actually write text books on this kind of thing (e.g. https://shop.theiet.org/guide-to-cables-and-cable-management) - and even those only tell you the sort of parameters to consider rather than saying "type x cable will be OK".


   - Andy.