I’m building a vacuum exposure unit…..and so I’m sourcing a 24v transformer to match load of 24v timer…….timer will control qty 10 x 18 watt fluorescent bulbs. ….Apart from the transformer being 24v do I need to pay attention to any other transformer detail…such as the amperage and wattage of the transformer? ….,And if so what additional transformer values should I be sourcing so it is suitable for the timer? I am a DIYer but exposure unit is a common diy job shared on social media (…..minus the finer detail ofcourse)