hi, i have a 6.4kw hob and 2.8kw oven to wire up using 40a mcb and 6mm cable to ccu and then down to a 45a outlet plate using 6mm to wire into the hob and another 6mm to supply side of a fused spur to wire into oven with 2.5mm from load side has anybody had trouble fitting 3 6mm cables into a 45a outlet plate?