RMX Programmable Power Supplies Safety Information & Installation Guide | © National Instruments | 3
RMX-4124/4125/4126/4127 (1500 W Models)
Caution Risk of electric shock. Before you connect the power cord, turn off the
switchboard breaker (a switch that cuts off the power supply from the switchboard).
Risk of fire. Connection to the switchboard must be performed by a person who has
knowledge about electrical safety standards and the electrical aspects of regulated DC
power supplies. The switchboard breaker must meet the requirements shown below.
Caution Inside the product, protective circuits are connected to match the polarity
of the input terminal. Be sure to connect the L, N, and (GND) terminals of the product
to the matching terminals on the switchboard.
In an emergency, turn off the switchboard breaker to disconnect the product from the AC power line.
Necessary Cable
• Vinyl cabtire cable (VCTF): Nominal cross-sectional area 5.5 mm
2
, 3 core
• Finished diameter: 10.5 to 14.4 mm in diameter
• Rated voltage: 250 V or higher
• Input terminal end: 14 mm of insulation stripped from conductor for the L and N wires.
Crimping terminal (round, M4) that fixes the cable insulation in place
for the GND wire.
• Length: 3 m or less
Switchboard Breaker Requirements
• Installation must be done in accordance with national wiring rules, such as NFPA 70 "NEC"
and CSA C22.1 "CEC".
• Rated current: 30 A (for safety, breakers whose rated current exceeds 30 A cannot be used)
• Do not power any other equipment from the switchboard breaker.
• Keep the breaker readily accessible at all times.
• Indicate that the breaker is dedicated for use with this product and that it is used to
disconnect the product from the AC power line.
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