My son has a new house and he is installing a Garden Spa (15amp plug) and he also wants to runs a small water feature and a 12 volt lighting transformer from the same 4mm cable. He has purchased a 15amp GPO for the Spa and a 10amp GPO for the other items. We have had to do a major excavation under a limestone retaining wall to get the cable ready to connect to a junction box and from that same single cable we proposed to run cable to the two GPO's. A man at Lawrence and Hanson has suggested that he needs a separate cable for the 10amp GPO. Please can you advise if this is true, I think that the current draw on the garden water feature and lighting transformer are not going to be very much.
He has installed a 16amp circuit breaker in the meter box.