Swapping out a failed 12V 80VA by Ikea toroidal Tx for a tramway lighting system with 3 x 20W 12V halogen lamps. I didn't know the rating when I was ordering so I've ordered a 160VA. Question is will this still be okay for the load? Will it pull the 6A RCBO out I'm using on the lighting circuit? I've ripped the guts out of the Ikea 'can' and placed the new Tx inside it.