Line-Side Isolation, Low Voltage MCC Pull Box
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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 power is off.
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Remove the 3/8-in. (9.5 mm) bolts, washers, and the lifting angle (Remove the Hardware).
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Remove the 10 /32-in. (4.8 mm) screws and vented hood (Remove the Hardware).
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Remove the 10/32-in (4.8 mm) screws and horizontal cross bus front cover (Remove the Hardware).
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Remove the pull box front cover for installation access (Install the Pull Box).
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Install 1/2-in. (12.7 mm) bolts and washers from inside the cabinet through the top closing plate and to the front pull box channel. Complete the connection with a washer and nut on the inside of the pull box.
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Install two 1 /4-in (6.4 mm) screws on the pull box rear channel and to the top closing plate.
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Install the two 3/8-in. (9.5 mm) bolts and washers that were removed in Step 2. Place them through the lower side flanges of the vented hood, and into the top of the cabinet. Torque the bolts to 28–33 lb-in (3.164–3.729 N•m).
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Re-install the pull box front cover removed in Step 5 (Install the Pull Box) and the top horizontal wireway cover removed in Step 4 (Install the Pull Box).