- Reaction score
- 856
another..
3.
An upstairs lighting circuit is wired in thermoplastic insulated and sheathed twin and CPC cable. The cable is buried within the fabric of the building. It is run with insulation surrounding it for a distance of 0.5m, although its total length is 30m. There are 8 x 230V GLS lights on the circuit, and the circuit is protected by a 5A BS 3036 fuse. If the ambient temperature is 30 degrees C and there is no grouping, determine an appropriate cable size.
i) Design current
ii) Rating of protective device
iii) Current-carrying capacity of the cable
iv) Volt drop within the cable
I have some maximum demand questions ready and waiting too..
3.
An upstairs lighting circuit is wired in thermoplastic insulated and sheathed twin and CPC cable. The cable is buried within the fabric of the building. It is run with insulation surrounding it for a distance of 0.5m, although its total length is 30m. There are 8 x 230V GLS lights on the circuit, and the circuit is protected by a 5A BS 3036 fuse. If the ambient temperature is 30 degrees C and there is no grouping, determine an appropriate cable size.
i) Design current
ii) Rating of protective device
iii) Current-carrying capacity of the cable
iv) Volt drop within the cable
I have some maximum demand questions ready and waiting too..