Rice Lake 820i, Technical Manual

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Installation
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2.3 Cable Connections
The universal model of the 820i provides six cord grips for cabling into the indicator: one for the power cord, five to
accommodate other cabling. Install plugs in all unused cord grips to prevent moisture from entering the enclosure.
2.3.1 Cable Grounding
Except for the power cord, all cables routed through the cord grips should be grounded against the indicator enclosure. To
ground shielded cables:
1. Use the lockwashers, clamps, and kep nuts provided in the parts kit to secure grounding clamps to the enclosure studs
near the cord grips. Install clamps only for cord grips that will be used. Do not tighten nuts.
2. Route cables through cord grips and clamps to determine cable length required to reach cable connectors.
3. Mark cables to remove insulation and shield.
• Foil shielded cables – strip insulation and foil from
cable 1/2 inch (13 mm) past the grounding clamp (see
Figure 2-1 ). Fold the foil shield back onto the cable
where it passes through the clamp. Ensure silver
(conductive) side of foil is outward to contact with the
grounding clamp.
• Braided shielded cables – strip cable insulation and
shield to just past the clamp. Strip another
1/2 inch (15 mm) of insulation to expose the shield
where it passes through the clamp (see Figure 2-1 ).
• Load cell cables – cut the shield wire just past the
grounding clamp. Shield wire function is provided by
contact between the cable shield and the grounding
clamp.
4. Route stripped cables through cord grips and clamps. Ensure shields contact clamps as shown in Figure 2-1 .
5. Tighten grounding clamp nuts.
6. Finish installation using cable ties to secure cables inside of indicator enclosure.
Cor d grip
Insulated cable
Foil
(silver side out) Gr ounding clamp
Shield wir e (cut)
Length of foil before folding
back on cable insulation
Cut insulation here
for foil-shielded cables
Braid
Cut insulation here
for braided cables
NOTE: Install lockwashers
first, against enclosure,
under grounding clamp
Figure 2-1. Grounding Cables