Hi. Does anyone know the size of the yellow wire at the bottom of the buss bar? Adding 200 to existing 200 watt roof solar. Going in series with just changing out victron controller and was told to take existing fuse from 20 to 40 amp. That yellow wire with 20amp fuse only one I see. Can change out to 40amp but also told be sure wire not 10awg. Thinking needs to be 8 or 6 awg. Anyone know the size? On the bottom of the buss bar thanks. Jeff
