I am hoping someone will shed some light (excuse the pun) on a few questions I have:
Q1.How many lamps / radials can be wired onto an MCB?
eg: 8 x 50W halogens (circuit 1) + 4x Pendant lights rated at 100W each (circuit 2) +8 x20W halogens (circuit 3).I am looking at running all 3 circuits off 1 breaker.if the total wattage of the lamps do not exceed the 6A x 230V =1380W would it be viable to wire it up as i have explained?
Q2:Does the lighting radial have a maximum length and will it affect the scenario I have highlighted as above if the runs are quite long?
Q3: I have to run external perimeter lighting circuit.I am aware that it has to be RCD protected and the fittings have to be IP rated.I am wondering what i can do to minimize the excessive use of too many single circuits.Unfortunately the house is very big and the cable run is very long which brings me to having to split the circuit.Can I do the same thing with the MCB and external circuit?
Q4:Furthermore,there is a motorised septic tank which is being installed.I am to run a SWA from the motor to the house Consumer Unit.The cable run to the CCU is well over 40m.So,I was wondering (inorder to shorten the run) if it would be possible to take a feed (Twin&E) from the the CCU across the house via the joist access and feed it through the wall cavity to exit outside.I will then take the SWA to the place of (Twin&E) exit where I will connect the cables within a IP rated JB.The SWA will be burried and labelled up as should.Am I right in doing this?
PS:Motor circuit will be RCD protected.!
Many Thanks for your time and comments.
Until next time.