Good Day,

Please can someone advise on a question i have about CB and Cable size.

Im taking a power feed from my main switch (2P 63Amp) to my 5KwH inverter AC input . The inverter AC input cable requirement is 4mm however I went 6mm (47Amp rating).

My question :

since the main switch (2p 63Amp) has 16mm cable , can I take a feed from the main switch (2p 63Amp) using 16mm cable to feed a 2P 40Amp breaker and connect my 6mm AC Inverter Input cable? This would mean my inverter AC input 6mm cable will remain safe from any over current .


Regards
Denzel