Safety, September 21, 2010

Sept. 21, 2010
Clean and inspect test leads after each use. If you spot a problem, don't try to fix it.

A few basic rules for test equipment:

  • Clean and inspect test leads after each use. If you spot a problem, don't try to fix it. Replacing suspect test leads costs less than labor time spent on repair attempts, and repair attempts are seldom effective.
  • If someone steps on a test lead or rolls a cart over it, assume the insulation has been damaged. Replace the test lead.
  • Always apply test leads one at a time to terminals rather than applying two leads simultaneously, as this prevents arcing between the leads.
  • Know what environment you're measuring in. A DMM rated as CAT II isn't safe to use on a service panel.
Pop quiz: Do you know, without looking, the CAT rating of the DMM you use most often? Write down your answer. Now, check that DMM and see if you were correct. Where do you use this DMM?

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.