Editorial: The IAEI and the Electrical Inspector
by Philip H. Cox, CEO/Executive Director
Some members have voiced interest in expanding the scope of associate members of the IAEI in order to give those members a greater role in the operation of the organization. It is felt by some that because the majority of the members are classified as associate members and many of them work very hard for the organization, they should have the right to hold any office, vote on all matters, and represent the IAEI on committees involving other organizations.
Canadian
Code: Delta-Wye Conversions
by Leslie
Stoch
What should happen when the electrical utility or a utility customer decides to convert the ungrounded 600 volt, 3-wire supply to a 600/347 volt, 4-wire, solidly grounded electrical supply? Some commercial and industrial businesses still prefer to use an ungrounded 600 volt supply for service continuity reasons, or to avoid the costs of converting to a grounded 4-wire supply.
Other
Code: Just Don't Bump Your Head On It
by David
C. Young, PE
When we talk about mini- mum ground clearances of span conductors, we have to know the sag of the conductor because the minimum height of attachment on a structure to comply with the National Electrical Safety Code® (NESC®) is the minimum clearance plus the maximum sag of the conductor. The ground clearance for equipment cases and rigid live parts is very simple and yet often ignored. Too often someone says, "Mount it high enough so someone doesn’t bump his head on it." This design "philosophy" is a gross violation of Rule 232B2 & 3 (page 72) of the 1997 NESC.
UL
Question Corner (pdf)
by Underwriters
Laboratories
The
“UL Question Corner” answers questions of general interest that
are sent in from authorized government inspectors and we believe will
have interest for many inspectors. |
