990-6470B-001

Recommended Cable Sizes for 3:3 UPS

DANGER
hazard of electric shock, explosion, or arc flash
All wiring must comply with all applicable national and/or electrical codes. The maximum allowable cable size is 95 mm2.
Failure to follow these instructions will result in death or serious injury.
NOTE: Overcurrent protection to be provided by others.

Cable sizes in this manual are based on table B.52.12 of IEC 60364-5-52 with the following assertions:

  • 90 °C conductors

  • An ambient temperature of 30 °C

  • Use of copper conductors

  • Installation method F

  • For AC cables: Maximum length 50 m with a line voltage drop <3%

  • For DC cables: Maximum length 15 m with a line voltage drop <1%

PE cable size is based on table 54.2 of IEC 60364-4-54.

If the ambient temperature is greater than 30 °C, larger conductors are to be selected in accordance with the correction factors of the IEC.

UPS rating 10 kVA 20 kVA 30 kVA 40 kVA 60 kVA 80 kVA 100 kVA 120 kVA 160 kVA 200 kVA
Input phases (mm2) 16 16 16 25 35 50 70 70 2x50 2x70
Input PE (mm2) 16 16 16 16 16 25 35 35 50 70
Bypass/output phases (mm2) 16 16 16 16 25 35 50 50 70 2x50
Bypass PE/output PE (mm2) 16 16 16 16 16 16 25 25 35 50
Neutral (mm2) 16 16 25 35 50 50 70 70 70 2x50
DC+/DC- (mm2) 16 16 25 35 50 70 70 2x50 2x70 2x95
DC PE (mm2) 16 16 16 16 25 35 35 50 70 95
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