!
MENU
Toggle navigation
Products
Pump & Bottle Sets
Cone Top Bottles
Wash Bottles
Trigger Sprayer Bottles
Flux Dispensers
One-Touch Dispensers
Glass Bottle
HDPE (High Density Plastic) Bottle
Tin-Plate Bottle
Lasting-Touch Dispensers
HDPE (High Density Plastic) Bottles
Glass Bottles
Pure-Take Locking Dispensers
HDPE (High Density Plastic) Bottle
Glass Bottle
Tin-Plate Bottle
Pure-Touch Dispensers
Glass Bottle
HDPE (High Density Plastic) Bottle
Take-Along Locking Dispensers
HDPE (High Density Plastic) Bottle
Glass Bottle
Twist-Lock Locking Dispensers
Black Pump
Purple Pump
White Pump
Pump & Bottle Accessories
Replacement Stems
Bottle Closures
Replacement Needles
Pumps Only
Lasting-Touch Pump
One-Touch Pump
Pure-Touch Pump
Pure-Take Locking Pump
Take-Along Locking Pump
Twist-Lock Locking Pump
Bottles Only
HDPE (High Density Plastic)
Blue durAstatic®
Green durAstatic®
Orange durAstatic®
Pink
Purple
White (No Colors Added)
Yellow durAstatic®
Badge & ID Holders
Color Badge Holders
Clear Vinyl Badge Holders
Shielded Badge Holders
Arm Badge
Badge Reels, Lanyards, & Strap Clips
Cable Management
Cable Control
Connector Covers & Dust Caps
Circular Connectors
D-Sub Connectors
Document Holders
With Zipper
No-Zipper
Drinking Cup
Fume Extractors
Series II System (1-2 Operators)
Complete System
Accessories
Replacement Filters
Hand & Power Tools
Cleaning Brushes
Conductive (Black Bristles)
Dissipative (Yellow Nylon Bristles)
Circuitracer™ Continuity Tester
IC Tube End Plug Extractor
Probes & Spudgers
Nylon
Steel
Wood
Screw Removal Pliers
Sleeve & Tubing Cutter
Small Nut Starter
Tool Storage
Wire & Harness Threader
Lotion
Probes, Spudgers, Soldering Aids
Double Ended Soldering Aids
Orange Sticks
Probes and Spudgers
Soldering Aid Kits
Soldering & Rework
Desoldering Braid
Lead-Free
One-Step
Quick Braid
Sea Braid
Solder Tip Cleaners
Stencil Rolls & Wipes
DEK
EKRA
MPM
YAMAHA
Vacuums
Blow Vac
ESD Service Vacuum
HEPA Vac
Workstation Organizers
Overstock & Clearance Deals
EasyBraid Products
ID & Vinyl Products
MENDA Pump Dispensers
Specialty Tools & Accessories
Workstation Organizers
Vacuums
ESD Products
ESD Liquid Dispenser
ESD durAstatic® Bottles Only
ESD Badge Holders
ESD Brushes
ESD Cable Control
ESD Conductive Connector Covers
ESD Drinking Cup
ESD Flux Bottles
ESD Fume Extractor & Accessories
ESD Lotion
ESD Workstation Organizers
ESD Document Holders
ESD Testers, Probes & Tools
ESD Vacuums & Accessories
ESD Clearance & Overstock
Beau Tech Products
Cleaning Brushes
Double Ended Soldering Aids
Hand Tools
Orange Sticks
Probes and Spudgers
Soldering Aid Kits
EasyBraid Products
Desoldering Braid
Stencil Rolls
Solder Tip Cleaners
WickGun Desoldering Braid Dispenser
Badge & ID Holders
Clear Vinyl Badge Holders
Color Badge Holders
Document Holders
Horizontal Badges
Vertical Badges
Proximity Card Badge Holders
Multi-Card Badge Holders
Shielded Badge Holders
Event Badge Holders
Flap Closure Badge Holders
Zipper Closure Badge Holders
Arm Badges
Badge Reels
Strap Clips
Lanyards
Resources
Videos
REGISTER / LOGIN
SHOP
RPL
CART (
0
)
Questions And Answers
#
136
List All Questions
Search
List by Category
Question
Where would I find any articles/information on 1 meg verses 2 meg resistors in heal straps? - Anonymous, Redmond, WA
Answer
The information you are looking for I can provide to you now, as there is very little information on our web site concerning the reasoning for 2 Megohm vs. 1 Megohm series resistance in foot grounders.The primary reason for having any additional or discrete resistance, and in particular 1 Megohm or greater is for personal safety. If the grounded operator comes into contact with live power (under 250 VAC), then this discrete resistance (minimum 1 Megohm) will limit the current the body receives to a safe level of below 0.25 mA. The MIL-STD-454 recommends that the current be under 1.0 mA, UL recommends that it be below 0.25 mA. All of our resistorized foot wear and wrist straps are UL approved. 1 Megohm versus 2 Megohm? Why a choice? There is a very simple, but important reason for the choice. One Megohm will get the unit UL approved, but since it is
highly
recommended to wear a pair of Foot Grounders (one on each foot) there is a problem when both foot grounders are grounding the body. The equivalent resistance of resistors in parallel can be much less than any individual resistance series. In the case where the circuit consists of only 2 identical values, the equivalent resistance is half of one of the identical values. Two 1 meg resistors in parallel is equivalent to 0.5 megohms, which is considered “unsafe” by UL but OK by MIL-STD-454. 2 Megohm resistor foot grounders when worn and ground by both feet would bring the equivalent resistance to 1 Megohm, considered safe by UL. This is why it is recommended to use 2 Megohm resistor foot grounders when wearing one on each foot.
Related Categories:
Carpet
If you have found this Q/A useful, please rate it based on its helpfulness.
This question has been rated:
(
0
% at
0
Ratings)
This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Review our
Cookies Policy
for more information.
Accept