Wire sizing
FIRE HAZARD
Select a wire size large enough to carry short-circuit current without overheating (refer to the following table).
To satisfy safety requirements, load wires must be heavy enough not to overheat while carrying the short-cir-
cuit output current of the unit. .
AWG
Suggested maximum
current (A)
1
mΩ/ft
mΩ/m
12
25
1.59
5.2
14
20
2.53
8.3
16
13
4.02
13.2
18
10
6.39
21.0
20
7
10.2
33.5
22
5
16.1
52.8
24
3.5
25.7
84.3
Notes:
1. Single conductor in free air at 30 °C with insulation
Output isolation
The outputs of all three power supplies are isolated from earth ground. Any output terminal may be grounded, or an
external voltage source may be connected between any terminal output and ground. However, output terminals
must be kept within ±240 Vdc of ground. The ±25 V supplies are tied together at one common terminal (Applies to
E36311A or when the power supply is in E3631A mode). Any one of the three terminals can be tied to ground as
needed. An earth ground terminal is provided on the front panel for convenience.
Multiple loads
When connecting multiple loads to the power supply, each load should be connected to the output terminals using
separate connecting wires. This minimizes mutual coupling effects between loads and takes full advantage of the
low output impedance of the power supply. Each pair of wires should be as short as possible and twisted or shielded
to reduce lead inductance and noise pick-up. If a shield is used, connect one end to the power supply ground
terminal and leave the other end disconnected.
If cabling considerations require the use of distribution terminals that are located remotely from the power supply,
connect output terminals to the distribution terminals by a pair of twisted or shielded wires. Connect each load to
the distribution terminals separately.
For multiple load application, all loads should either be connected to the front panel binding post or rear panel
output.
28
Keysight E36300 Series User's Guide
