Type 1, 1A and Type 12 Enclosures
Power Bus Splicing MCCs with Single Bar/Phase Splice Kit (600 and 800 A Copper Horizontal Bus, 65,000 A Short Circuit or Less)
DO NOT use the single bar splice connection with fork-type bus bars (see Incorrect Application of Single-Bar Splice on Fork-Type Bus for details on installing splice kits on MCCs equipped with fork-type bus.
Correct Application of Splice (shown installed) for 600/800 A, Non-Fork Bus
Incorrect Application of Single-Bar Splice on Fork-Type Bus
To splice the power bus, follow these steps.
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Remove all four bolts from the integral splice bar.
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Move the single splice bar to the left and align the two left holes in the splice bar with the corresponding holes in the horizontal bus on the left section.
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Reinstall the four bolts into the horizontal bus on the left and right sections.
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Torque all bolts on both ends to 31–32 lb-ft. (41.87–43.22 N•m).
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Return to Step 1 for all phases and for the neutral bus (if supplied).
Power Bus Splicing MCCs with Multiple Bar/Phase Splice Kit
To splice the power bus:
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Remove the two left bolts. Loosen, but do not remove, the two right bolts on the splice assembly.
NOTE: Do not remove the two right bolts from the splice assemblies. Doing so will permit splice bars to fall from the splice assembly. If this occurs, reassemble the splice bars in the proper order before continuing. -
Slide the splice assembly to the left until the two left holes are in line with the corresponding holes in the horizontal bus on the left section.
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Reinstall the two left bolts through the splice bars and into the horizontal bus.
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Torque all bolts on both ends to 31–32 lb-ft. (41.87–43.22 N•m).
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Return to step 1 for all phases and for the neutral bus (if supplied).