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Related Products: |
EGSK-301, EGMA-301 |
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Related Documents: |
EZDP-2044 |
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Type: |
Planning Guide |
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Keywords/Labels: |
Assurance Monitoring, Shaft Grounding, Diagram, Conduit |
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Summary: |
Table and diagram detailing the correct set up of conduit runs with specifications for conduit trade size, run lengths, and wire. |
|
Color on Diagram |
Conduit Run Description |
Conduit Trade Size |
Max Run Length |
Wire Description |
Purpose |
Wire Supplied by |
Conduit Supplied by |
|---|---|---|---|---|---|---|---|
|
Red |
Shaft Grounding Assembly to junction box |
1/2 in (1.27 cm) |
27 ft (8.2 m) |
3 conductors, shielded, 18 AWG, high temp |
2 rope wear status, 1 shaft voltage, |
Cutsforth |
Plant Electrical Contractor |
|
Purple |
Junction box to assurance system |
3/4 in (2 cm) |
30 ft (9.1 m) (including Red run) |
4 twisted pair, individually shielded, 18 AWG |
Signal wires from junction box to assurance system |
Cutsforth |
Plant Electrical Contractor |
|
Green |
Junction box to unit case ground |
N/A |
47 ft (14.3 m)(including Red run) |
8 AWG copper MTW green |
Ground from junction box to unit case ground |
Cutsforth |
Plant Electrical Contractor |
|
Black |
Assurance to unit case ground |
N/A |
9 ft (2.7 m) |
20 AWG coaxial RG58 |
Signal ground from assurance system to unit case ground |
Cutsforth |
Plant Electrical Contractor |
|
Blue |
Dedicated 120 V AC power to assurance system |
3/4 in (2 cm) |
N/A |
AC: 85–264 V AC, 47–440 Hz, 10 W or DC: 20–32 V DC, 10W |
Power for assurance system |
Plant Electrical Contractor |
Plant Electrical Contractor |
|
Orange |
Plant DCS drop to assurance system |
1-1/4 in (3.17 cm) |
N/A |
4–20 mA DCS signal lines |
Monitoring output to plant’s DCS system |
Plant Electrical Contractor |
Plant Electrical Contractor |
|
Yellow |
High-Frequency Drain |
N/A |
4 ft 6 in (1 m 15 cm) |
12 AWG, chemical-resistant wire |
Drain ground wire for high-frequency voltage spikes |
Cutsforth |
Plant Electrical Contractor |
| A - Red: 1/2 in (1.27 cm) conduit from SGA to junction box | E - Black: 20 AWG coaxial RG58 to unit case ground |
| B - Yellow: 12 AWG from main ground conductor, through resistor, then to case ground | F - Blue: 3/4 in (2 cm) conduit for plant power input |
| C - Green: 8 AWG from junction box to unit case ground | G - Orange: 1-1/4 in (3.17 cm) conduit for 4–20 mA lines |
| D - Purple: 3/4 in (2 cm) conduit from junction box to Assurance Monitoring System |
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