15B & 17B 
Users Manual 
2 
XWWarning 
To prevent possible electrical shock, fire, or 
personal injury: 
•  Read all safety Information before you 
use the Product. 
•  Carefully read all instructions. 
•  Examine the case before you use the 
Product. Look for cracks or missing 
plastic. Carefully look at the insulation 
around the terminals. 
•  Do not use and disable the Product if it 
is damaged. 
•  Do not use the Product if it operates 
incorrectly. 
•  Do not touch voltages > 30 V ac rms, 42 
V ac peak, or 60 V dc. 
•  Limit operation to the specified 
measurement category, voltage, or 
amperage ratings. 
•  Use the Product only as specified, or the 
protection supplied by the Product can 
be compromised. 
•  Replace the batteries when the low 
battery indicator shows to prevent 
incorrect measurements. 
•  Comply with local and national safety 
codes. Use personal protective 
equipment (approved rubber gloves, face 
protection, and flame-resistant clothes) 
to prevent shock and arc blast injury 
where hazardous live conductors are 
exposed. 
•  Do not apply more than the rated voltage, 
between the terminals or between each 
terminal and earth ground. 
•  Measure a known voltage first to make 
sure that the Product operates correctly. 
•  Use the correct terminals, function, and 
range for measurements. 
•  Do not use the Product around explosive 
gas, vapor, or in damp or wet 
environments. 
•  Do not use test leads if they are 
damaged. Examine the test leads for 
damaged insulation, exposed metal, or if 
the wear indicator shows. Check test 
lead continuity.