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

I'm doing the calculation for total voltage drop. I have 14 radials/ways going out. As I understand it, that would equal a max allowance of 0.285% voltage drop per radial/way. Or some sort of mixture throughout not exceeding the 4% drop allowance overall. Firstly, is this correct?

Secondly, should I be doing my calculations based on actual Load or the MCB ratings of the individual radials/ways?

Thanks in advance!

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0 Nano Brewery over 4 years ago

AJJewsbury:
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.

Cheers Andy.

The H07RN-F I'm looking at has rigid conductors:
https://www.superlecdirect.com/cables-and-accessories-c1/h07rnf-flex-mains-and-control-cables-en6033212-s185/

I see that NYY is compatible with 20/25 cable glands though, so may be a neater and more IP rated job all round?
https://www.superlecdirect.com/cables-and-accessories-c1/iec605021-vde-0276603-nyyj-cable-s11/
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0 Nano Brewery over 4 years ago

AJJewsbury:
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.

Cheers Andy.

The H07RN-F I'm looking at has rigid conductors:
https://www.superlecdirect.com/cables-and-accessories-c1/h07rnf-flex-mains-and-control-cables-en6033212-s185/

I see that NYY is compatible with 20/25 cable glands though, so may be a neater and more IP rated job all round?
https://www.superlecdirect.com/cables-and-accessories-c1/iec605021-vde-0276603-nyyj-cable-s11/
Cancel
Vote Up 0 Vote Down

Cancel

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

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