AB Quality Allen-Bradley 1394 User Manual page 205

Required Protection
under 110-10 of
NEC 1999
Preferred Fully
Rated Breakers
Breakers Selected
for Device
Protection
Fully Rated
Short Circuit
Interupt Capability
Required Protection
Traditional
under 110-10 of
Current Limit
NEC 1999
Fused
Allowed But
Disconnect or
No Longer Preferred
Breaker
Rated for
Short Circuit
Available
Limiting to
Short Circuit
Rating of Down
Stream Breaker
Breakers Selected
for Device
Protection
With Limited Short
Circuit Interupt
Capability
Figure A.1
Circuit Protection under NEC 1999 110-10 (preferred fully rated devices)
Fully Rated
Fused
Disconnect
Fully Rated
Breaker
Drive Drive
Figure A.2
Circuit Protection under NEC 1999 110-10 (allowed but no longer preferred)
Drive Drive
Specifications
Required Protection
under 110-10 of
NEC 1999
Preferred Fully
Rated Breakers
Distribution
Block
Breakers Selected
for Device
Protection
Fully Rated
Drive
Short Circuit
Interupt Capability
Required Protection
under 110-10 of
NEC 1999
Allowed But
No Longer Preferred
Distribution
Block
Breakers Selected
for Device
Protection
With Limited Short
Circuit Interupt
Drive
Capability
A-7
Fully Rated
Fused
Disconnect
Fully Rated
Breaker
Traditional
Current Limit
Fused
Disconnect or
Breaker
Rated for
Short Circuit
Available
Limiting to
Short Circuit
Rating of Down
Stream Breaker
Publication 1394-5.0 — May 2000