Originally Posted by
Hoodoo Brown
The 15A circuit should be wired (as per AS 3000) with larger wire diameter between the power point and the fuse box.it is capable of handling more load(current in amps)
A 10A domestic circuit is designed to hold 10 Amps not 15A.Extending this with a short lead with a 15A capability does not protect the rest of the wiring (in the roof etc.)
Current inrush on startup of the compressor will be high thus a 15A requirement.
Settle for the 10A version and don't risk it as it may void house damage insurance.If you dont like it continue to search for a twin cylinder 10A unit.