Energy Tech Laboratories EDP70 manual Recommended wire sizes

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 220-10 b.

4)UPS output cables should be run in separate conduits from input cables.

5)Grounding conductors are sized per NEC 250-95.

6)Cable sizes are based upon NEC.

Recommended sizes only. Be sure to follow the codes which apply to your installation.

Refer to UPS connection data table on following page.

page 22 --MI00/10056 rev.1--05/2001