NFPA-70E 2009 - Article 250

[JimCrowell]

Does Article 250.2(B) of NFPA-70E 2009 require dielectric testing of insulated tools every 3 years?

Thanks in advance.

 

[richxtlc]

That is the maximun time between tests. You need to check ASTM F 1505, Standard Specifications for Insulated and Insulating Hand Tools, 2007 for the requirement for specific tools.

 

[zog]

Hmmm, not sure if I agree, depends on what you mean by insulated tools. A hotstick for example does need to be tested dielectricaly but an insulated screwdriver does not if it meets the requirements of 130 (D)(1). Most quality insulated tools have 2 layers, the 1000V rated insulation (Usually yellow) and the protective layer (Usually orange). As long as you cannot see the yellow you know the tool still maintains its voltage rating.

I have to admit I had not noticed that 250.1 added (13) and (14), I will be meeting in March with a few 70E commitee members and I will ask about thier interpretation of this, you may have found a gray area.