Table 32: N+N AC Power Calculations for 24-Port EX4300 Switches
(continued)
Ports
enabled
for
PoE+
Available
PoE Power
(in watts)
Base
Power (in
watts)
Backup
Power (in
watts)
System
Power
Budget (in
watts)
Total
Power (in
watts)
Power Supply Rating
PSU
1
PSU
0
24
950
150
0
1100
1100
–
1100 W AC
24
895
150
1045
1045
2200
1100 W AC
1100 W AC
6
182.5
150
332.5
332.5
1450
350 W AC
1100 W AC
Table 33 on page 53
lists the
N
+
N
power calculation for 32-port EX4300 switches that
use 350 W AC power supplies.
Table 33: N+N AC Power Calculations for 32-Port EX4300 Switches
Base Power
(in watts)
Backup Power
(in watts)
System Power
Budget (in watts)
Total Power (in
watts)
Power Supply Rating
PSU
1
PSU
0
177
0
350
350
–
350 W AC
177
332.5
332.5
700
350 W AC
350 W AC
Table 34 on page 53
lists the
N
+
N
power calculation for 48-port EX4300 switches that
use 350 W, 715 W AC, and 1100 W AC power supplies.
Table 34: N+N AC Power Calculations for 48-Port EX4300 Switches
Ports
enabled
for
PoE+
Available
PoE Power
(in watts)
Base
Power (in
watts)
Backup
Power (in
watts)
System
Power
Budget (in
watts)
Total
Power (in
watts)
Power Supply Rating
PSU
1
PSU
0
5
175
175
0
350
350
–
350 W AC
5
157.5
175
332.5
332.5
700
350 W AC
350 W AC
5
157.5
175
332.5
332.5
1065
715 W AC
350 W AC
18
540
175
0
715
715
–
715 W AC
16
504.25
175
679.25
679.25
1430
715 W AC
715 W AC
16
504.25
175
679.25
679.25
1815
1100 W AC
715 W AC
30
925
175
0
1100
1100
–
1100 W AC
29
870
175
1045
1045
2200
1100 W AC
1100 W AC
53
Copyright © 2015, Juniper Networks, Inc.
Chapter 4: Power Supplies
Summary of Contents for EX4300
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