 |
 Preventing Voltmeter Blind Spots
If you trust your life to the accuracy of your voltmeter, do you know
that most voltmeter types can have blind spots? The three most common
types of voltmeters are the multimeter, the solenoid, and the
proximity. Each type can give some misleading information to the user.
If you are responsible for the safety of others, NFPA 70E-2009 in new
paragraph 110.6(D)(1)(e) requires qualified employees to be trained in
the limitations of their voltmeters. This is a new requirement and can
be used as evidence in an OSHA proceeding.
|
|
 Testers: Year of the Cat IV.
Today's multifunction electrical testers are more versatile than ever. Designed to provide electricians with safety and comfort in multiple applications ranging from detecting voltage presence in a panel box to identifying spare conductors in a conduit.
|
|
 Conduits Installed with Craftsmanship
An experienced electrician can measure the craftsmanship of another
electrician by simply viewing their conduit runs. Some conduit
installations are a work of art; others are not. The larger conduit
sizes can be purchased in sweeps for factory perfect bends, but the
smaller conduit sizes are still field crafted.
While applying the art of conduit bending, several code requirements
come into play. The National Electrical Code in Chapter 9 Table 2
requires a minimum-bending radius to prevent kinking or severe
reduction of the inner diameter.
|
|
See More Story Results... |
|
See All Current Stories >> |
