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Wire Gauge
(AWG)
Wire Type
Tightening Torque
(lb-in)
Minimum temperature
rating of conductors
Copper conductors
7
75°C
10-18 AWG
Copper Conductors
Table 3: AC Line Cord
Table 4: Conduit Wires
4.7.2 Outdoor Power Cord Selection
1. If an outdoor AC Line cord is selected to connect the unit to AC wall outlet, be sure that the
selection criterion in the following table are fully complied.
2. The connection of the power cord should also be in accordance with Article 110.14 of
ANSI/NEPA 70.
3. Using pin terminals (as shown in the Figure 14) for the power cord at the end connected to
terminal strip is recommended.
"Warning
- Risk of Electric Shock.
Connect plug of outdoor power cord only to a covered Class A
GFCI receptacle that has an enclosure that is weatherproof with the attachment plug cap inserted or
removed.
"
4. If conduit is used, be sure to choose wires in accordance with the following criterion.
Cord Rating
Wire (AWG)
Outdoor Use
Attachment Plug
Flexible Cord Type
Three conductors,
current rating 10A,
VW-1, 105
℃
,
125/250V
Check
specifications of
liquid tight cable
gland to determine
the outside
diameter of the
wire.
(O.D. > 6.8mm;
18AWG min. for
each inner wire)
Use cord type with
the suffix "W", "W-A"
or the words "Water
resistant" or
"Outdoor" marked on
the flexible cord
15A, 125V (NEMA
5-15P) or 15A, 250V
(NEMA 6-15P)
SP-2, SPE-2, SPT-2,
NISP-2, NISPE-2,
NISPT-2, SP-3, SPE-3,
SPT-3
SV, SVE, SVO, SVOO,
SVT, SVTO, SVTOO
SJ, SJE, SJO, SJOO,
SJT, SJTO, SJTOO
S, SE, SO, SOO, ST,
STO, STOO
"Warning - Risk of Electric Shock.
Install wires going through conduit only on a circuit protected
by a Class A GFCI.
"
"Warning:
Power supply cord must not be attached to the building surface, nor run through walls,
ceilings, floors and similar openings in the building structure.
"
"Warning:
The socket outlet shall be installed near the equipment and shall be easily accessible.
"
"Warning:
To reduce the risk of fire, connect the unit only to a circuit provided with Listed 20
Amperes circuit breaker in accordance with the National Electrical Code, ANSI/NFPA.
"
Note:
Wiring, liquid tight fittings, conduit and cable glands shall be selected in accordance with
Article 300 of ANSI/NFPA 70.
Note:
Before installing the unit, confirm that there is listed IEC 61643-12 or UL1449 low surge
protective device with surge protection level less than 2.5KV being connected between the
unit and the power source.
Note:
Surge Arrestors or Transient Voltage Surge Suppressor external to the equipment to reduce
overvoltages or to bypass surge current shall be installed per Article 280 or 285 of ANSI/NFPA 70.
Note:
Be certain to keep coolant or oil away from the unit.