On 05/03/18 23:04, Vir Campestris wrote:
The man cave project goes ahead. The old sectional garage has been
demolished, and I found to my surprise that the SWA feeding it is blue,
red, and yellow. Is a new sparky going to balk at this and insist it is
replaced? (it would be a PITA - the cable goes into the house...)

Andy

No. There is no requirement to "upgrade" the colours. All that matters
is that the cable is suitable for the load and in working condition.