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Section 6 |
Electrical Standards
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www.pflow.com
P 414 352 9000
F 414 352 9002
6720 N. Teutonia Ave.
Milwaukee, WI 53209
All electrical wiring and craftsmanship completed in the field shall be
in accordance with existing state, local and National Electrical Code
(NEC) standards.
All hard wiring of all electrical devices external of control panel.
The control circuit refers to all circuits and devices at 120 VAC and below.
Power circuit refers to all circuits and devices at 208 VAC and above.
Systems refers to automated vertical and horizontal conveyors.
1. It is recommended that all control circuit wiring is #14 AWG, copper,
stranded, type THHN or equal, 600 VAC.
2. It is required that all power circuit wiring is #12 AWG minimum (sized
appropriately for the load), copper, stranded, type THHN or equal. A green
grounding wire shall be provided to power devices.
3. Per NFPA 79, the colors of individual conductors shall be:
Power wiring - Black
115 VAC - Red
115 VAC neutral - White
24 VAC - Red/black
Note: These colors only apply to individual conductors. These colors do not
apply to prefabricated cables.
4. All wires must be labeled on each end with the wire number from the
electrical drawing using a machine or computer generated label, utilizing
black characters on a white background.
5. All field devices must be individually terminated in the control panel.
6. Screw on solderless connectors (wire nuts) shall be of the insulated type,
spring lock, and of the proper size to accommodate wires.
7. Terminal lugs shall be of the insulated type, crimp style, and of the proper
size to accommodate wire(s) and terminal fasteners.
8. Conduit and related hardware shall con form to local, state, and NEC
standards. The minimum size shall be 1/2". Connectors and couplings shall
be appropriate for conduit type.
9. Flexible conduit shall be a minimum of 1/2", shall be of the liquid-tight type,
and shall be installed with compatible liquid-tight connectors.
10. The customer shall locate and install a fused disconnect switch within the
line of sight of the control panel. The cus tomer shall ensure accessibility to
the disconnect switch with regard to existing electrical codes and stan dards.
11. Control wiring and conduit shall be separate from the power wiring
and conduit.
12. Drop cords (flexible cords) shall be multi-con ductor festoon-type cable
where applicable.
Field Electrical
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24 VAC neutral - White
24 VDC - Blue
0VDC - White/blue
Ground - Green or green/yellow