multiple transformer造句

In addition, Powerlinking also referred to combination between multiple Transformers.
Is it only to the neutral from the local transformer, or are the secondary neutrals of multiple transformers connected?
The copper conductors would have had to be larger in cross section to supply the same watts, resulting in higher cooper costs to wire a building, unless multiple transformers were used, which could result in high transformer costs.
It's difficult to find multiple transformer in a sentence. 用multiple transformer造句挺难的