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MPD-DS-

WM

-FDS Series

 

Conduit/Cable Installation

In situations where the

 metal cable connector and conduit hubs

 must

 be bonded to the ground system

, t

his can be 

accomplished by installing them either by method 1 or method 2 as shown.

Method 1: Enclosures with flange plates using threaded 

openings through the flange plate and standard 
locknuts. Flange Plate must be connected to the 
internal grounding system using jumper wires. 

Method 2: Enclosures without flange plates using a hole 

“through the enclosure” with grounding 
locknut.  

These locknuts must be bonded between each other and to the 
grounding system using jumper wires. After the entry hardware is 
installed, connect the appropriate conduit or cable. 

Note: All unused enclosure openings must be closed using 

approved close-up plugs with standard locknuts.

Refer to IOM sheet of cable connector for proper installation 

IMPORTANT: When connecting conductors:

Strip the wire so that the insulation covers the wire up to the

terminal.

Make sure all wires are connected to the correct terminals,

per the wiring diagram.

Tighten all terminal blocks/screws.

OPERATION

MPD-DS-WML-NFDS Series switches operate with an exterior switch, allowing the unit to be cycled off and on without 

the need to open it. Two-position OFF-ON and three-position ON-OFF-ON are the most common setups, and switches 

are typically labeled to show the current position. 

REPLACING FUSES

Always turn off supply power before opening unit or performing any maintenance! All maintenance should be 

performed only by a licensed electrician with knowledge of these types of electrical systems. 

In the event you need to replace fuses, disconnect power to unit and open the door of the enclosure. Remove the 

faulty fuse(s) and replace with like parts of the same type and ratings. Close uni

t door once fuses are in place and unit 

is ready for testing. Ensure the load on the switch is not exceeding the capacity and ratings for the disconnect switch 

and  fuses,  then  restore  supply  power.  Refer  to  the  wiring  diagram  that  was  included  with  your  disconnect  switch  if 

needed. 

REPLACEMENT PARTS

The 

MPD-DS-WM-FDS

 is designed to provide years of reliable performance. Should the need for replacement parts 

arise, please contact Larson Electronics. 

Larson Electronics, LLC

 

Phone: (877) 348-9680

 Fax: (903) 498-3364 

  www.larsonelectronics.com 

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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 

[email protected]

 OR BY PHONE AT 

1-877-348-9680

 FOR FURTHER ASSISTANCE. 

PLEASE VISIT LARSONELECTRONICS.COM FOR 

WARRANTY

 AND 

RETURN

 INFORMATION.

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