In addition, distortion and noise caused by non-linearcomponents in power supplies are also cancelled. Switching power supplies,ubiquitous in today's equipment, tend to introduce more of this type of noisedue to their lack of a large transformer at the power input acting as alow-pass filter. Installing a balanced technical power system is only moderately different fromconventional power. Electricians are soaccustomed to neutral and ground being effectively the same that there is notelling what might get connected wrong if they are unclear on the concept. More prosaically, the standard AC line tester with three lamps will not worknormally.
Balanced power is created through the use of line transformers.
The first step is to take a power inventory of your facility to determine thetotal tech power draw. Most equipment will state somewhere, on the rear panelor in the manual, either current or watts drawn. In general, it is wise to useVAs, rather than watts, when determining power consumption for a device. Thisis because watts can be misleading if the device's power factor is not known. Add it all up, add in your expansion needs and throw in someextra for good measure.