The field wiring terminals on the switch units used for pushbutton or selector switch stations are marked. The
and “0” indicate normally open contacts; and and “C” indicate normally closed contacts of the switch. These
switches are provided with binding screw terminals. For EDS/EDSC Series Toggle Switches: splice factory sealed
wires to supply wires using suitable connectors.
1.
Terminate incoming cables to the line and load side of switch (field installation only).
2.
Strip the insulation on each conductor wire back 3/8”.
3.
Use a slotted or Phillips head screwdriver to loosen the field wiring terminal screws the required three (3) or four
(4) turns.
4.
Insert the bare wire conductor(s) on either side of the terminal screw(s), under the terminal wire clamp(s) and
securely tighten the screw(s).
5. NOTE:
Do not exceed 15 in.-lbs. of torque.
6.
Test wiring for correctness with continuity checks and also for unwanted grounds with an insulation resistance
tester.
WARNING
No conduit openings are to be added in the field. All unused conduit openings must be plugged and plugs must be a
minimum of 1/8 inch thick and have a minimum of five (5) threads engagement (seven (7) threads for Group B
applications). For EFS Enclosures with 1 inch hub(s), EDS 3-
pole Snap Switches and EFD/EDS with “GB” suffix, all
conduits must be sealed within 18 in. of the enclosure.
7.
Assemble cover on box making certain there are no pinched wires.
8.
Assemble cover to the device body with the cover screws making certain there are no pinched wires. Check the
tightness of the cover screws to ensure that the cover assembly is securely fastened.
9.
Pour Chico
®
Sealing Compound into EYS/EYD Series Sealing Fittings (where used) in accordance with the
instructions with each sealing fitting used. (NOTE: Seals are not required for Class I, Division 2.)
10.
Tighten cover bolts.
WARNING
Check for dirt, grit or other foreign material on the mating surfaces of the cover and the device body. Be certain that
each surface is wiped completely clean before assembling. Surfaces must seat fully against each other to provide a
proper explosion proof seal.
CAUTION:
Use 12 AWG copper conductors only. Insert the bare wire conductor(s) under terminal clamp and
securely tighten the screw(s). Note: Do not exceed 35 in-lbs. of torque.
THESE INSTRUCTIONS MAY NOT COVER ALL DETAILS OR VARIATIONS OF THIS PRODUCT FOR YOUR EQUIPMENT OR
INSTALLATION REQUIREMENTS. SHOULD FURTHER INFORMATION NOT COVERED BY THESE INSTRUCTIONS BE REQUIRED,
PLEASE CONTACT LARSON ELECTRONICS BY EMAIL AT
OR BY PHONE AT 1-800-369-6671
FOR FURTHER ASSISTANCE.
PLEASE VISIT LARSONELECTRONICS.COM FOR
WARRANTY
AND
RETURN
INFORMATION.
