- Reaction score
- 5,940
Re: Shower
You have already asked this question here.
Ib < In < Iz
Ib you have calculated as 9500/230= 41.3A
In must therefore be equal to or greater than this and so on standard MCB values you have 45A or 50A MCB
Iz must therefore be equal to or greater than 45A or 50A depending on the device chosen.
Iz, the current carrying capacity of the cable, is dependent on the installation method and reference should be made to the on site guide appendix F or BS7671 Appendix 4 for detailed information.
Compliance must also be determined with the expected Zs and voltage drop of the circuit.
This table provides the CCC for twin and earth cables with varied installation methods.
You have already asked this question here.
Ib < In < Iz
Ib you have calculated as 9500/230= 41.3A
In must therefore be equal to or greater than this and so on standard MCB values you have 45A or 50A MCB
Iz must therefore be equal to or greater than 45A or 50A depending on the device chosen.
Iz, the current carrying capacity of the cable, is dependent on the installation method and reference should be made to the on site guide appendix F or BS7671 Appendix 4 for detailed information.
Compliance must also be determined with the expected Zs and voltage drop of the circuit.
This table provides the CCC for twin and earth cables with varied installation methods.