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Nec 700, 701, 702 Comparison; Electrical Formulas - Honeywell 6442 Manual To Operations

Automatic home standby generators

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NeC (700, 701, 702) Comparison
Scope
Equipment Approval
Witness Testing (on-sight)
Periodic Testing
Battery Maintenance
Maintenance Records
Load Testing
Capacity
Other Standby Loads Allowed
Peak Shaving Allowed
Automatic
Equipment Approval
Means to Permit Bypass
Elect. Operated - Mech. Held
Other loads
Max. Fault Current Capable
Derangement
Carrying Load
Battery Charger Failed
Ground Fault Indication
NFPA 110 Signaling
At service
At neutral to ground bonding
Wiring kept independent
Fire protection (ref 700-9d)
Maximum power outage
Retransfer delay
Automatic starting
On-site fuel requirements
Battery charger
Ground Fault
NEC Comparison Table to be used as a general guideline in determining the proper generator for specific applications. Refer to architectural documents for final selection.

Electrical Formulas

TO FIND
KILOWATTS (kW)
KVA
AMPERES
WATTS
NO. OF ROTOR POLES
FREQUENCY
RPM
kW (required for Motor)
RESISTANCE
VOLTS
AMPERES
E = VOLTS
I = AMPERES
Article 700 - Emergency
Legally required life safety
For Emergency / (UL2200)
At install & periodically
Yes
Yes
Yes
Yes
All Loads
Yes with load shedding
Yes
Yes
For Emergency / (UL1008)
Yes
Yes
No
Yes
Yes / Standard common alarm
Yes / Displayed at ATS
Yes
Yes (480V & 1000A)
Yes / Optional annunciator
Yes / Type & location
Yes (if remote)
Yes
Yes (1000 persons or 75' building)
10 sec
15 min setting
Yes
2 hours (see NFPA 110)
Yes
Indication Only
KNOWN VALUES
Volts, Current, Power Factor
Volts, Current
kW, Volts, Power Factor
Volts, Amps, Power Factor
Frequency, RPM
RPM, No. of Rotor Poles
Frequency, No. of Rotor Poles
Motor Horsepower, Efficiency
Volts, Amperes
Ohms, Amperes
Ohms, Volts
R = RESISTANCE (OHMS)
Article 701 - Standby
Legally required critical support
(fire fighting, health hazards, etc)
For Intended Use / (UL2200)
At install
Yes
Yes
Yes
Yes
All loads intended to operate at one time
Yes with load shedding
Yes
Yes
For Standby / (UL1008)
No
No
Yes with load shedding
Yes
Yes / Standard common alarm
Yes / Displayed at ATS
Yes
No
Yes / Optional annunciator
Yes / Type & location
Yes (if remote)
No
No
60 sec
15 min setting
Yes
2 hours
Yes
No
1-PHASE
E x I
1000
E x I
1000
kW x 1000
E
Volts x Amps
2 x 60 x Frequency
RPM
RPM x Poles
2 x 60
2 x 60 x Frequency
Rotor Poles
HP x 0.746
Efficiency
E
I
I x R
E
R
PF = POWER FACTOR
Article 702 - Optional Standby
Protect property & facilities
For Intended Use / (UL2200) / Not in 2008
None
None
None
None
None
All loads intended to operate at one time /
Not in 2008
2008 – Yes with load shedding
Yes
No
For Intended Use / (UL1008)
No
No
N/A
Yes
Yes / Standard common alarm
Yes / Displayed at ATS
No
No
No
Yes / Type & location
Yes (if remote)
No
No
N/A
No
No
None
No
No
3-PHASE
E x I x 1.73 x PF
1000
E x I x 1.73
1000
kW x 1000
E x 1.73 x PF
E x I x 1.73 x PF
2 x 60 x frequency
RPM
RPM x Poles
2 x 60
2 x 60 x Frequency
Rotor Poles
HP x 0.746
Efficiency
E
I
I x R
E
R
13

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