
9
4. Now use the information you wrote down in steps 1-3 to find the Installation Wiring Diagram that applies to
your FERRUPSinstallation. If the bypass switch is external (separate), use Table 7. If it is internal (attached),
use Table 8.
Table 7: Installation Wiring Diagrams for Units with External Bypass Switches
* With a step-up or step-down transformer.
** Call Best Power for a) single-phase installations that do not have the same input and output voltage, or b) split-
phase installations that require 220 or 127 VAC.
Table 8: Installation Wiring Diagrams for Units with Internal Bypass Switches
* With a step-up or step-down transformer.
** Call Best Power for a) single-phase installations that do not have the same input and output voltage, or b) split-
phase installations that require 220 or 127 VAC.
Figure 12 and Figure 13AMake-Before-Break or Break-Before-Make208 or 480 Source*/ 240 Input
Figure 11 and Figure 13A
Call Best Power.**
Figure 11and Figure 13E
Call Best Power.**
Figure 11and Figure 13D
Figure 11and Figure 13C
Figure 11and Figure 13A
Figure 11and Figure 13B
Figure 11and Figure 13B
Make-Before-Break or Break-Before-Make
Break-Before-Make only.
Make-Before-Break or Break-Before-Make
Break-Before-Make only.
Make-Before-Break or Break-Before-Make
Make-Before-Break or Break-Before-Make
Break-Before-Make only.
Break-Before-Make only.
Break-Before-Make only.
240 input and 120/240 output
240 input and 208 output**
230 input and 230 output
220 input and 127 output**
220 input and 220 output
220 input and 220 output (Mexico)
208 input and 120/240 output
208 input and 120/208 output
208 input and 208 or 240 output
Figure 10 and Figure 13A or 13H
Figure 10 and Figure 13E or 13G
Figure 10 and Figure 13D or 13F
Figure 10 and Figure 13C
Figure 10 and Figure 13A
Make-Before-Break or Break-Before-Make
Make-Before-Break or Break-Before-Make
Make-Before-Break or Break-Before-Make
Break-Before-Make only.
Make-Before-Break or Break-Before-Make
240 input and 240 output
230 input and 230 output
220 input and 220 output
(except Mexico)
127 input and 127 output
120 input and 120 output
Use These Diagrams:Bypass Switch TypeInput and Output VAC
Call Best Power.**
Figure 17
Break-Before-Make only.
Make-Before-Break or Break-Before-Make
220 input and 127 output**
240 input and 208 output**
208 or 480 Source*/ 240 Input
Figure 16Make-Before-Break or Break-Before-Make
For 208 VAC,
Break-Before-Make only.
208 input and 208 output
208 input and 120/208 output
208 in put and 120/240 output
220 input and 220 output (Mexico)
230 input and 230 output
240 input and 120/240 output
Figure 15Make-Before-Break or Break-Before-Make
For 127 VAC, Break-Before-Make only.
120 input and 120 output
127 input and 127 output
220 input and 220 output (except Mexico)
230 input and 230 output
240 input and 240 output
Use This Diagram:Bypass Switch TypeInput and Output VAC