Figure 48: Ground Splice Bar As Shipped; Figure 49: Ground Bar Bolt Replaced - Hach sc200 User Manual

Model 6 Motor Control Centers
Section 4—Installing the MCC
Ground Bus Splicing for NEMA
Type 1, Type 12, and Type 3R
Figure 48: Ground Splice Bar as Shipped
Figure 49: Ground Bar Bolt Replaced
Power Bus Splicing of 2500 A Bus
with 100,000 A Short Circuit
Rating
42
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors, and covers before turning on power to this
equipment.
Failure to follow this instruction will result in death or serious injury.
To splice the ground bus, follow these steps:
1. Turn off all power supplying this equipment before working on or inside
the equipment, and follow lockout/tagout procedures. Always use a
properly rated voltage sensing device to confirm the power is off.
2. Remove ground bar bolts from the right and left sections (see
Figure 48).
3. Slide the ground splice bar into the right section, aligning the mounting
holes (see Figure 49).
4. Replace the ground bar bolts (see Figure 49) in the right and left
sections. Torque both bolts to 60–75 lb-in (6.75–8.44 N•m).
5. Replace all covers and barriers and close all doors.
This section provides instructions for splicing the power bus of one NEMA
Type 1 or Type 12 section with 2500 A bus braced for 100,000 A to the power
bus of another section of the same type. Splicing material is captive on the
integral splice assembly unless the section is equipped with offset bus.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must only be installed and serviced by qualified
electrical personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors, and covers before turning on power to this
equipment.
Failure to follow this instruction will result in death or serious injury.
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80459-641-01E
10/2012