On 2016-07-21 14:42, dennis@home wrote:

connect the inside unit to a 20A feed (that's what it said even though
draws less than 2kW)

Most of that ~2 kW is motor = big start-up surge.

I fitted one from vyair but they don't appear to do them anymore.

A modern unit might have an electronic motor controller (VFD) which
can reduce the surge.


--
Graham Nye
news(a)thenyes.org.uk