09825

The 09740/09741, 09835/09836 and

09820/09821/09825/09826/ are shipped with an

extra ring terminal so that the ground wire may

be cut to length during installation. The

09740/09741 and 09835/09836 feature a pair of

mounting holes designed to accommodate

standard #10 screws, allowing the units to be

mounted to the work bench.

Wrist straps, work surfaces, floor mats and other

electrostatic discharge (ESD) protective

products should be grounded to a common point

ground.

Per ANSI/EOS/ESD S6.1, Grounding paragraph

4.1.1 "Every element to be grounded at an ESD

protected station shall be connected to the same

common point ground."

ESD Handbook TR 20.20 paragraph 5.1.3 Basic

Grounding Requirements "The first step in

ensuring that everything in an EPA is at the

same electrical potential is to ground all

conductive components of the work area

(worksurfaces, people, equipment, etc.) to the

same electrical ground point. This point is called

the common point ground. The next step in

completing the ground circuit is to connect the

common point ground to the equipment ground

(third wire, green)."

If all elements are connected to the common

point ground, even if the equipment ground

connection is compromised, all workstation

elements will be connected and be at equi-

potential or at the same charge. Being at the

same electrostatic charge will mean that no

discharge should occur.

Connect the ground wire directly to the nearest

utility “green wire” ground point. In a properly

wired building, the “green wire” equipment

ground point may be the center screw of the

standard 110VAC outlet. Some special outlets

may “float” the center screw. Test before you

hook up.

Figure 7. Recommended grounding point.

Individual work stations must be individually

grounded to the “green wire” equipment ground.

For ESD worksurface installation information,

see Desco Technical Bulletin TB-2000.

TB-2003 January 2009 Page 1 of 2

Per ANSI/ESD S20.20, all conductors, including

personnel, must be electrically connected and

attached to a known ground. EOS/ESD S6.1

recommends hard ground, without resistor, of

worksurface or floor mats. Per ANSI/ESD

S20.20, ground fault circuit interrupters (GFCI)

should be considered to provide personnel

protection.

Desco offers a number of common point

grounds and wrist strap ground connectors

designed to ground multiple operators or items.

Figure 1. 09740/09741 wrist strap bench ground.

The 09740/09741 wrist strap bench ground is a

wrist strap ground connector and consists of a

mounting bracket with two standard banana

jacks installed and soldered to a ten foot ground

wire terminated with a ring terminal with a

0.200" hole.

The 09741 includes a wrist strap parking station.

See figure 2.

Figure 2. 09741 premium bench mounted

ground with parking station

The 09837 Multi Grounding Hub is designed for

use as either a wrist strap ground connector or

as a common point ground for all items to be

grounded at a bench (i.e. table mat ground cord,

floor mat ground cord, banana jack ground

block, etc.). The Multi Grounding Hub

Figure 3. 09837 Multi Grounding Hub

incorporates six standard banana jacks, and six

terminations for ring terminals (10-32 screw in

threaded holes).

Figure 4. 09835/09836 quad common point

ground

The 09835/09836 quad common point ground is

designed for use as either a wrist strap ground

connector or as a common point ground. The

quad ground incorporates four standard banana

jacks, a 10mm snap stud, and ten feet of ground

wire terminated with a ring terminal with a

0.200" I.D. hole. The model 09835 also

incorporates a 1 megohm resistor in series with

the snap stud.

Figure 5. 09820/09821/09825/09826

common point ground.

The 09820/09821/09825/09826 common point

ground is designed to ground bench mats by

snapping on the mat’s stud, and to provide a

convenient wrist strap ground connector. Items

09820/09821 incorporate two standard banana

jacks, a 10mm snap socket, and 10 feet of wire

terminated with a ring terminal with a 0.200" I.D.

hole. Items 09825/09826 have a 10mm snap

stud and 15 feet of wire. Items 09821/09826

also incorporate a one megohm resistor in

series with the snap.

Figure 6. All elements at the ESD work station

should be connected to the same common point

ground, such as 09837 Multi Grounding Hub.

DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 Fax (909) 627-7449

DESCO EAST - One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Fax (781) 575-0172 Web Site: http://www.desco.com

“GREEN WIRE”

EQUIPMENT

GROUND

POINTS

RING TERMINAL

CAN BE

ATTACHED

HERE

Made in America

2009 DESCO INDUSTRIES INC.

Employee Owned

BANANA PLUG

CAN BE

ATTACHED

HERE

BANANA PLUG

CAN BE

ATTACHED

HERE