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4-7. Electrical Service Guide
Input Voltage
Input Amperes At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Cricuit Breaker
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In Feet (Meters)
Min Grounding Conductor Size In AWG
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 Choose a circuit breaker with time-current curves comparable to a Time Delay Fuse.
2 "Time-Delay" fuses are UL class "RK5" .
3 "Normal Operating" (general purpose - no intentional delay) fuses are UL class "K5" (up to and including 60 amp), and UL class "H" ( 65 amp and
above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
Y Caution: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard.
4-8. Extension Cord Data
NOTE
Input Power
Input Voltage
Phase
208 V
1
230 V
1
2 "Time-Delay" fuses are UL class "RK5" .
3 "Normal Operating" (general purpose − no intentional delay) fuses are UL class "K5" (up to and including 60 amp), and UL class "H" ( 65 amp and
above).
1
2
, Time-Delay
3
Normal Operating
4
4
When calculating max. cord length, remember to include conductor length from
line disconnect device to input power receptacle.
Fuse Size Or
Hertz
Circuit Breaker Rating
Time-Delay
50/60
Normal Operating
Time-Delay
50/60
Normal Operating
Conductor Size
2
40 A
10 AWG
3
50 A
2
35 A
10 AWG
3
45 A
50/60 Hz Single Phase
208
230
33
30
40
35
50
45
10
10
80
98
(24)
(30)
10
10
Max. Cord Length
80 ft (24 m)
98 ft (30 m)
OM-2239 Page 13