There are many transformers and power packs that can supply input power for Digitrax boosters & command stations. Most regular DC train control packs do not have enough power to supply the full power potential of the a 5 or 8 amp booster, since they were designed to only run 1 locomotive in a blocked system.
To get the full power potential of your booster, you must use a power supply that can supply enough power. Check with your local Digitrax dealer to see which transformers are available.
If you are using a Zephyr Xtra, please use ONLY the power supply that is packaged with the DCS51.
Be very careful when you hook up your power supply to be sure that you do not create a shock or fire hazard. Many modelers have safely hooked up line transformers when creating their own conventional DC throttles, from one of the many "do it yourself" project articles.
If you are not comfortable with the 110Volt input wiring, we strongly suggest you consult with an electrician.
1) Most important is to be sure the 110V input voltage is safely isolated from the low voltage secondary of the transformer. A properly installed safety ground will ensure that the layout cannot become a shock hazard if there is mis-wiring or insulation failure.
2) You must protect the primary and secondary windings of the transformer from overload. A typical primary protection would be a 1 amp "slow-blow" fuse (in an appropriate fuse holder) wired in the primary line circuit. For the secondary we recommend a circuit breaker rated no larger than the minimum of either the transformer secondary current rating or the booster's output current rating (typically 5 or 8 amps).