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POWERING TECHNOLOGY
Manual No. MS0027-MAN rev. 4
guardian_access_3u_ms27-man-rev4-0817.indd
4.1.4 Cable Size
Please use the recommended cable size given below for the system installation.
Port Current
Max.
Cable Size
Min.(mm²)
Cable Size
Min.(AWG)
Temperature
Rating
AC Input -L1 32A 10mm² 7 AWG 105°C
AC Input -L2 32A 10mm² 7 AWG 105°C
AC Input -L3 16A 10mm² 7 AWG 105°C
AC Input -N 32A 10mm² 7 AWG 105°C
AC Input -PE - 10mm² 7 AWG 105°C
Battery MCB 80A 20mm² 4 AWG 105°C
Battery MCB 100A 25mm² 3 AWG 105°C
Battery MCB 125A 35mm² 2 AWG 105°C
DC Load -MCB 63A 16mm² 5 AWG 105°C
DC Load -MCB 50A 14mm² 6 AWG 105°C
DC Load -MCB 40A 10mm² 7AWG 105°C
DC Load -MCB 32A 8mm² 8 AWG 105°C
DC Load -MCB 25A 8mm² 8 AWG 105°C
DC Load -MCB 20A 6mm² 9 AWG 105°C
DC Load -MCB 16A 4mm² 10 AWG 105°C
DC Load -MCB 10A 2.5mm² 14 AWG 105°C
DC Load -MCB 6A 2.5mm² 14 AWG 105°C
DC Load -MCB 4A 1.5mm² 15 AWG 105°C
Table 4-1 Recommended Electrical Cable Size
Circuit Breakers must not exceed the below loading based on maximum 55°C operating
ambient:
• For load breaker rated 5 to 32A, the maximum load must not exceed 80% of rating value.
• For load breaker rated up to 63A, the maximum load shall not exceed 40A if space is
provided between breakers. Maximum 30A is allowed if no space provided.
• For battery breaker rated up to 80A, the maximum load shall not exceed 80% of rating
value.
• For battery breaker rated 100 to 125A, the maximum load shall not exceed 75A.
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