Sierra Monitor Corporation HRG015-W - Manual (Page 31)

HRX-OM-J049-A
Chapter 3 Transport and Installation
HRG010-W HRG015-W 3.2 Installation
1st edition : Aug. 2006
Rev. A: May. 2007
3-9
3.2.5 Electrical wiring
„ Power supply cable and GFCI breaker
Select a cable for power supply and GFCI breaker corresponding to the model no.
provided in the following table.
Table 3-2 Cable for Power Supply and Current Leakage
Item HRG010-W HRG015-W
Size 4- core 8 mm 2 4- core 14 mm 2
Power cable
Round crimp contact size 8 - 4S 14 - 5S
Size 6- core 0.75 mm 2
Signal cable
Y-shaped crimp contact size 1.25Y - 3
Capacity of GFCI breaker * 40A 60A
* Use the breaker with current sensitivity of 30mA at minimum.
z Only qualified personnel are allowed to install wiring.
z Be sure to disconnect the power for safety. Wiring installation with
the unit energized is strictly prohibitted.
z Use the specified cables. Properly apply strain relief to prevent an
external force from being exerted on the terminals. Poor or loose
connection can cause electrical shock, heat spots, or fire.
z Supply the power to the unit from a reliable power source (without
surge or sag voltage).
z Be sure to use a GFCI breaker to prevent an electrical shock and
burnt compressor motor. The breaker with adequate capacity of
current leakage and load should be selected in accordance with “7.1
Standard Specifications”.
z Ensure that the power supply meets the specification of the unit.
z Always establish a ground for safety.
z Do not connect the ground to a water line, gas pipe or lighting
conductor.
z Do not branch off the wiring to make multiple circuits. Potential hot
spots or fire may occur if disregarded.
z Do not modify the electrical wiring. Incorrect wiring can cause an
electrical shock and fire. Failure to do so will void any warranty.
z The set value of the safety device must not be changed. Changing
the set value can cause unit failure and fire.