O Gauge Heljan Class 33 DCC Control

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I'm getting different answers from different suppliers on whether I can use a NCE power cab for my class 33. I haven't bought a chip yet but will eventually be using sound for this model. From I can gather the 2 motors in this model draw a relatively heavy current. I'm told that I wouldn't have this problem with Dapol O gauge models. Anyone had experience with this sort of problem, but specifically to the use of a Heljan with a NCE controller.

Regards

Ian