ETL EDP70 User Manual
Page 27
MI00/10056 rev. 8 — 05/2006-- page
27
Recommended wire sizes
1)
It is recommended that the external cables and protection be selected for the highest rated
unit of the model in use.
2)
Reserve (or primary) input and output Neutral cable size should be greater than that of the
line cables in order to be able to supply non-linear loads having a Crest Factor of up to 3:1 (i.e.
where neutral current = 1.7 x line current).
If non-linear loads are not to be supplied from the Installation, the Neutral can be of the same size
as the load cable.
3)
Recommended AC input overcurrent protection represents 125% of nominal full load
current (continuous) plus the short duration input current (non-continuous) for battery re-
charging per NEC 215.2.
4)
UPS output cables should be run in separate conduits from input cables.
5)
Grounding conductors are sized per NEC 250.122.
6)
Cable sizes are based upon NEC.
Refer to local codes applying to your installation prior to choosing appropriate
cable size.
Refer to UPS ampacity table on following page.