ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
220/230/240V 60Hz Systems
by gfretwell. 09/23/18 02:50 PM
Inspection camera help
by petey_c. 09/22/18 07:52 AM
Motion detectors and dimmers
by gfretwell. 09/20/18 04:02 PM
Extension cords
by annemarie1. 09/20/18 08:54 AM
Acronis Backup 2017
by gfretwell. 09/16/18 12:46 AM
New in the Gallery:
Plug terminals
Housebilding DIY wiring
Who's Online Now
0 registered members (), 8 guests, and 28 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Recall notice: Extech amp clamp #197687
12/14/10 09:31 PM
12/14/10 09:31 PM
S
sparkyinak  Offline OP
Member
Joined: Jul 2007
Posts: 1,335
Alaska


"Live Awesome!" - Kevin Carosa
Arc Flash PPE Clothing, LOTO & Insulated Tools
Re: Recall notice: Extech amp clamp [Re: sparkyinak] #197744
12/17/10 10:00 PM
12/17/10 10:00 PM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,247
SI,New Zealand
Quote
When the battery runs low, the meters can fail to give an accurate voltage reading, resulting in the operator falsely believing the electrical power is off or low. This poses an electrocution hazard.

Actually, if you use the Prove-Test-Prove method on your test equipment, on a known source of voltage, before and after you've tested something, this sort of thing shouldn't happen.
Having absolute faith in the integrity of your test gear (especially the battery operated stuff) is what is known as complacency.
Complacency kills electricians. shocked

Re: Recall notice: Extech amp clamp [Re: Trumpy] #197750
12/18/10 12:34 AM
12/18/10 12:34 AM
K
KJay  Offline
Member
Joined: Nov 2007
Posts: 763
MA, USA
From what I can gather, a complaint was filed because the meter displays are equipped with a low battery indicator that doesn’t operate as it is supposed to when the meter is used with a low battery.

The meter will power up normally and the display indicates zero volts, even when voltage is present at the test leads, but the “low batt” indicator does not come on, so apparently there’s no indication that anything is wrong. Personally, I would never trust a meter again if it did that to me even once.

Re: Recall notice: Extech amp clamp [Re: KJay] #197762
12/18/10 09:50 AM
12/18/10 09:50 AM
Trumpy  Offline

Member
Joined: Jul 2002
Posts: 8,247
SI,New Zealand
As I said KJay, in my post, it is up to the user of the test gear to ascertain that that gear is operating correctly before and after the testing has taken place.
Even if that means using a second piece of test gear.
Wires do break in test leads, if you are using fused test leads, a fuse could have blown, you need to ensure your OWN safety and the knowledge that you have isolated a circuit correctly and have isolated the correct circuit.

Re: Recall notice: Extech amp clamp [Re: Trumpy] #197821
12/21/10 06:05 PM
12/21/10 06:05 PM
A
AFlannery  Offline
New Member
Joined: Dec 2010
Posts: 1
Orem, UT
Interestingly, this is almost identical to the FLUKE clamp meter recall from last year: Fluke Recall Website http://www.fluke.com/33xrecall

"Through quality assurance tests, we have discovered a potential short circuit connection on the circuit board. This may lead to inaccurate voltage readings including a low or no voltage reading on a circuit energized with a hazardous voltage. This finding could create a hazardous situation if the user were to contact live voltage based on an erroneous instrument reading."

Re: Recall notice: Extech amp clamp [Re: AFlannery] #197919
12/31/10 03:25 AM
12/31/10 03:25 AM
S
sparkyinak  Offline OP
Member
Joined: Jul 2007
Posts: 1,335
Alaska
I agree with you Trumpy 1000% but we live in a would of idiot proofing just so we can breed bigger idiots to surecede the idiot proofing. It what drives our economy


"Live Awesome!" - Kevin Carosa

Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
RH1
RH1
California
Posts: 22
Joined: August 2009
Show All Member Profiles 
Top Posters(30 Days)
Admin 13
Trumpy 11
Popular Topics(Views)
249,419 Are you busy
187,341 Re: Forum
176,681 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.019s Queries: 15 (0.004s) Memory: 0.9783 MB (Peak: 1.1279 MB) Zlib enabled. Server Time: 2018-09-24 05:42:39 UTC