Screw-terminal wiring
Gauge
0.2 mm
2
to 2.1 mm
2
(24 AWG to 14 AWG)
copper conductor wire
Wire strip length
6 mm (0.24 in.) of insulation stripped from the
end
Temperature rating
85 °C
Torque for screw terminals
0.20 N · m to 0.25 N · m (1.8 lb · in. to
2.2 lb · in.)
Wires per screw terminal
One wire per screw terminal
Connector securement
Securement type
Screw flanges provided
Torque for screw flanges
0.3 N · m to 0.4 N · m (2.7 lb · in. to
3.5 lb · in.)
Safety Voltages
Connect only voltages that are within the following limits:
V terminal to C terminal
35 V maximum, Measurement Category I
Measurement Category I is for measurements performed on circuits not directly connected to
the electrical distribution system referred to as
MAINS
voltage. MAINS is a hazardous live
electrical supply system that powers equipment. This category is for measurements of voltages
from specially protected secondary circuits. Such voltage measurements include signal levels,
special equipment, limited-energy parts of equipment, circuits powered by regulated low-
voltage sources, and electronics.
Caution
Do not connect the NI 9148 to signals or use for measurements within
Measurement Categories II, III, or IV.
Note
Measurement Categories CAT I and CAT O are equivalent. These test and
measurement circuits are not intended for direct connection to the MAINS building
installations of Measurement Categories CAT II, CAT III, or CAT IV.
Safety and Hazardous Locations Standards
This product is designed to meet the requirements of the following electrical equipment safety
standards for measurement, control, and laboratory use:
•
IEC 61010-1, EN 61010-1
•
UL 61010-1, CSA 61010-1
•
EN 60079-0:2012, EN 60079-15:2010
•
IEC 60079-0: Ed 6, IEC 60079-15; Ed 4
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NI 9148 User Manual
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