Ransburg EFM & EFMD Solvent Applicator 76480, 76482, 76485, 76488 - Manual (Page 23)

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EFM(D) Solventborne Robotic Atomizers - Operation
INTRINSIC SAFE WIRING INTRINSIC SAFE WIRING INTRINSIC SAFE WIRING INTRINSIC SAFE WIRING INTRINSIC SAFE WIRING
Wiring Practices Wiring Practices Wiring Practices Wiring Practices Wiring Practices
Instrinsically safe wiring must be separated from
non-intrinsically safe wiring in order to prevent the
transfer of unsafe levels of energy to the hazardous
area. The following are a few recommended
practices:
Safe Area Safe Area Safe Area Safe Area Safe Area
In the non-hazardous area, intrinsically safe and
non-intrinsically safe wiring must be separated by
one of the following methods:
1. Raceway or conduit
2. Grounded metal or insulated partition between
the intrinsically safe and non-intrinsically safe
wiring
3. Airspace of at least 50mm (2 inches) between
intrinsically safe and non-intrinsically safe wiring
and the wires must be tied down to prevent
loosening and shorting together.
The same methods are used for intrinsically safe
and non-intrinsically safe terminals.
Requirements Requirements Requirements Requirements Requirements
Intrinsically safe wiring must be identified, prefer-
ably by color coding of light blue. If light blue is
used on non-intrinsically safe wiring, the intrinsi-
cally safe wiring may be marked by other means
such as tagging. This alternate means, however,
must be visible after installation.
> These sections are to be used as
guidelines or recommendations only. For
rules and more detailed practices, refer
to National Electrical Code.
N O T E N O T E N O T E N O T E N O T E
Hazardous Area Hazardous Area Hazardous Area Hazardous Area Hazardous Area
In the hazardous area, all intrinsically safe and
non-intrinsically safe wiring must be separated by
the same methods suggested for the safe area.
However, the following requirements must also be
followed:
1. In enclosures containing multiple intrinsically
safe circuits, the terminals for connection must
have a spacing of at least 6mm or a grounded or
insulated partition between the circuits.
2. Devices like limit switches or pressure switches
must not contain a non-intrinsically safe circuit in
addition to an intrinsically safe circuit unless:
a. It is enclosed in a separate compartment, or
b. It is separated by 50mm spacing or contains
a grounded metal or insulated partition.
3. When conduit or raceway is utilized to enclose
intrinsically safe wiring, it must be sealed or vented
so not to transfer the hazardous atmosphere to a
safe area.