Chapter 2
Installation and Configuration
NI PS-15 Power Supply User Manual
2-12
ni.com
For example: Which wire gauge must be used to trip a C-Characteristic
circuit breaker with a rating of 3 A? The load wire length is 21 m.
Answer: A 3 A C-Characteristic circuit breaker requires a loop impedance
of less than 270 m
Ω
(test results). Table 2-3 shows that up to 23 m of wire
with a cross section of 1.5 mm
2
is below 270 m
Ω
. You should not use a
wire smaller than 1.5 mm
2
.
Inductive and Capacitive Loads
The NI PS-15 is designed to supply any kind of load, including unlimited
capacitive and inductive loads.
