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SAPTF33xx-1xx
24-hour Technical Support: 1-800-260-1312 -- International: 00-1-952-941-7600
Installation
— Continued
Grounding the module
The SAPTF33XX-1XX modules come equipped with grounding lugs—
GROUNDING IS REQUIRED. See Figure 5.
The installer must consult local and/or national electrical codes and regulations or
facility grounding requirements to determine required grounding of the module.
They require a grounding conductor wire terminated with a two-hole, compression-
type grounding connector. The 2-hole grounding connector and grounding wire
(copper only)
is not included and must be provided by the customer/installer. See
Figure 6.
105
115
Grounding Lugs
(Rear View )
Figure 5: 105 and 115 Grounding Lugs
Figure 6: Grounding Connector and Copper Wire
2-Hole Grounding
Connector
Copper Wire
Grounding wire size
The wire size of the Protective Earthing
(ground)
conductor should be greater than
or equal to the wire size of the power source conductors. The power-source
conductor wire size is installation dependent and sized to accommodate acceptable
IR losses between the power source and the device terminal block. The device
terminal block accommodates #6 wire lugs. A #6 wire lug typically terminates #16 -
#20 wire, with #18 being the most common.
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Installation
— Continued
Grounding the module — continued
The electrical conducting path from the module must:
•
Flow via the grounding lugs to the common bonding network (CBN) as
required.
•
Be of sufficiently low impedance to conduct fault currents likely to be imposed
on the module.
•
Enable proper operation of any over-current protection devices.
The conductor must be fastened to the grounding lugs with the enclosed anti-rotation
star washers and lug-nut fasteners. The applied torque required for proper connection
with the lug-nut fasteners is specified by the connector’s manufacturer.
To properly ground the SAPTF33xx-1xx module:
1.
Obtain one (1) grounding conductor
(#12 AWG copper wire or larger is
suggested; however, the installer must consult local and/or national electrical
codes and regulations or facility grounding requirements to determine required
conductor size.)
and a 2-hole compression-type grounding connector.
2.
Remove the two Kepnuts.
3.
Attach the grounding conductor to the module by placing the two-hole
connector onto the grounding lugs and fasten with the attached Kepnuts at the
proper torque
(per the manufacturer’s specification)
.
4.
Attach the opposite end of the grounding conductor to the common bonding
network (CBN) as required.
Kepnuts
2-Hole Ground
Connector
Grounding Lugs
Figure 7: Model 105 Grounding Feature