9821 Desco, 9821 Datasheet - Page 2

• Manufacturer Part Number: 9821
• Description: CORD CMMN GRND 10MM W/RES 10'
• Manufacturer: Desco

Specifications of 9821

• Accessory Type: Ground, Common Point - for Bench Mat with Resistor
• For Use With/related Products: 2 Banana Plug Wrist Straps
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 9820R

TB-2007 Page 2 of 4
Industrial Grade
Wrist Straps
We make our wrist straps with the
industrial environment in mind.
They are designed and
manufactured to give you years of
service in the tough electronic
assembly environment.
May we send you a sample?
Quality
Ground Cords
For the highest quality ground
cords for mats, work surfaces, and
equipment call Desco. Ask for a
sample.
DESCO EAST - One Colgate Way, Canton, MA 02021-1407 • [phone] • Fax [phone] • Web Site: http://www.desco.com
DESCO WEST - 3651 Walnut Avenue, Chino, CA 91710 • [phone] • Fax [phone]
Figure 3. How current flow through a work surface is generated.
Figure 4. The relationship between equipment (or safety) ground and earth
ground.
completely due to related effects.
Fig. 3 shows how current flow
through the work surface is
generated.
bonding the two earth grounds
together, eliminating the resistance
between them. If electrical power is
nearby or incorporated in
workstations, work surface and
wrist strap ground circuits should
be connected only to the electrical-
power-system ground to minimize
potential differences.
Figure 2. Separate ground systems present potential problems.
This problem can be solved by
is often used in case a fault
develops in the primary power-
system ground. Fig. 4 shows the
relation between equipment ground
(also referred to as safety ground)
and earth ground. This
methodology is designed to handle
situations in which 120-V power
accidentally contacts the frame of
electrical equipment. So-called fault
current will flow through the
equipment ground, triggering the
local circuit breaker. Installation of
Ground Fault Circuit Interrupters, or
GFCIs, increases safety further.
An equipment ground conductor