Recommended Upstream Protection and Cable Sizes

DANGER
hazard of electric shock, explosion, or arc flash A readily accessible breaker is required for upstream protection. Maximum fault current disconnection time: 46 seconds at 200% input. Failure to follow these instructions will result in death or serious injury.

Cable sizes in this manual are based on table B.52.12 and B.52.13 of IEC 60364–5–52 with the following assertions:

• 90 °C conductors

• An ambient temperature of 30 °C

• Use of copper or aluminium conductors

• Installation method F4 for DC cables and installation method F5 for AC cables, corrected for single layer in perforated cable tray.

PE cables are sized in accordance with IEC 60364-5-54 table 54.2 Minimum cross-sectional area of protective conductors.

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