Equipment Failure
Represents an
Unsuspecting Electrocution.
Establishing an Electrically
Safe Work Condition. Why should you voltage
check the circuit after you
have locked out the circuit? The Code requires you
to open the disconnect
to be de-energized to
identify these conditions. |
Severe Electric shock
Caused by Poor
Workmanship
Oversized hole saw was used
to drill an access hole (A) for the
primary wiring to connect
the sign to the building power.
Unfortunately they drilled the
hole through the signs
raceway
exposing the
600volt ballast leads.
(B) The sign was
not properly grounded resulting
in a construction worker being
hospitalized for electric shock. |
Fire
Waiting to Happen
No Separation or
Electrical Enclosures
(A) LED power supplies need to be
installed in an enclosure or sign body
and spaced for heat per UL 48 and NEC 600.21
(B) The primary wire and equipment
ground is required to be connected
using Chapter 3 wiring methods to an enclosure at this point. The equipment grounding conductor is required to be connected to the enclosure or sign
body at this point. |
Not Having the Correct Breaker
for You to Lock Out Safely
If a disconnecting means
is required
to be lockable
open elsewhere in this code,
it shall be capable of being
locked in the open position.
The provisions for locking
shall remain
in place with or
without a lock installed |
Hello Superman
From the time you get out of your vehicle and enter
the plant, safety needs to be a concern and duty.
Whether you work in the plant or on the road accidents
happen.
|
NFPA NEC 600.21...
Class 2 power supplies
Low Voltage Class 2 Power sources are required to be in a sign body or
an electrical enclosure.
The primary wiring needs to be
complete and in Chapter 3 wiring
methods. (arrow)
Equipment grounding can stop
at the enclosure |
