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

Was wondering if H07RN-F would also be suitable option?

Flex isn't often used for fixed wiring - partly because it's more expensive and harder to dress neatly, but also because the finely stranded conductors may need special preparation (e.g. ferrules) for use in some types of terminals. It's more usual to use a rigid conductor system for the fixed wiring and then transition to flex for the final span to the appliance where flexibility or heat resistance is required. Immersion heater normally require heat resisting flex for example.


Other considerations on choosing a wiring system might include whether future changes/additions are anticipated (in which case singles in trunking/conduit might be advantageous), hygiene (what sort of cleaning processes will go on, does the system have to minimise nooks and crannies that can trap dust and dirt, will it have to be resistant to water ingress from washing down etc.) and whether the system is likely to come into contact with grease or oil.


Also consider EMI/screening - especially if you have controls that might be chopping up the normal a.c. waveform into something more spiky (for speed or temperature control perhaps) .

 

Run around on tray.

How are you attaching the cables to the tray? Bear in mind that supporting cables only using plastic devices (e.g. nylon cable ties) is no longer permitted.


   - Andy.

Was wondering if H07RN-F would also be suitable option?

Flex isn't often used for fixed wiring - partly because it's more expensive and harder to dress neatly, but also because the finely stranded conductors may need special preparation (e.g. ferrules) for use in some types of terminals. It's more usual to use a rigid conductor system for the fixed wiring and then transition to flex for the final span to the appliance where flexibility or heat resistance is required. Immersion heater normally require heat resisting flex for example.


Other considerations on choosing a wiring system might include whether future changes/additions are anticipated (in which case singles in trunking/conduit might be advantageous), hygiene (what sort of cleaning processes will go on, does the system have to minimise nooks and crannies that can trap dust and dirt, will it have to be resistant to water ingress from washing down etc.) and whether the system is likely to come into contact with grease or oil.


Also consider EMI/screening - especially if you have controls that might be chopping up the normal a.c. waveform into something more spiky (for speed or temperature control perhaps) .

 

Run around on tray.

How are you attaching the cables to the tray? Bear in mind that supporting cables only using plastic devices (e.g. nylon cable ties) is no longer permitted.


   - Andy.