Overcurrent protection for multi-wire branch circuits

Electrical · Distribution Panels · printed page 98 (PDF page 99)

Book index entries

Multi-Wire Branch Circuits – Over-current Protection Over-current Protection for Multi-wire Branch Circuits Distribution Panels – Electrical Electric Distribution Panels

Text in the illustration

distribution panel
from service box
STOVE
note:
pairs of fuses are linked together in special fuse blocks intended for split receptacles and other multi-wire branch circuits (both fuses must be removed simultaneously)
in some areas, not all multi-wire branch circuits require special fuse blocks
red and black wires are fed from different bus bars
red and black wires are fed from same bus bar
red wire
grounding terminal
ground wire
to split receptacle (properly wired)
to split receptacle (improperly wired)
black wire
neutral wire
neutral bus bar
15 AMP
FUSE

Generated explanation

The illustration shows a fused electrical distribution panel with a stove fuse block, three paired branch-circuit fuse blocks, a grounding terminal, and a neutral bus bar. Red and black conductors supply two multi-wire branch circuits leading to split receptacles, with neutral and grounding conductors also shown. A green check identifies the properly wired arrangement, where the red and black wires are fed from different bus bars. A red cross identifies the improperly wired arrangement, where both wires are fed from the same bus bar. A note explains that special linked fuse blocks allow both fuses of a multi-wire branch circuit to be removed simultaneously, while noting that requirements vary by area.

Related illustrations

0616

Overcurrent protection for multi-wire branch circuits

· p. 105

The illustration shows a fused distribution panel supplying multi-wire branch circuits to split receptacles, with red and black hot conductors, neutral conductors, and a grounding terminal identified. The properly wired

0581

Pull-out fuse blocks for multi-wire branch circuits and 240 volt circuits

· p. 98

The illustration shows a fused distribution panel supplied from a service box, with a 240-volt stove circuit on the left and a multi-wire branch circuit feeding a split receptacle on the right. The stove circuit has blac