Emerson FPC Torque specifications, general, Panelboard main circuit breaker torque specifications

Equipment Inspection and Startup

Table 11 Torque specifications, general

	Electrical connections			Electrical connections
	with 1 Belleville washer			with 2 Belleville washers
		Torque			Torque
	lb-in		N-m	lb-in		N-m
Bolt shaft size, in./mm
1/4 / M6	40		4.5	80		9.0
5/16 / M8	80		9.0	180		18.0
3/8 / M10	120		13.6	240		27.1
1/2 / M12	480		54.3	—		—
Input and output breakers
Up to 150 amp	80		9.0	160		18.0
175 - 500A	120		13.6	240		27.1

Table 12 Panelboard main circuit breaker torque specifications

	Torque
	lb-in	N-m
Busbar-to-breaker	240	27.1

Table 13 Branch circuit breaker torque specifications

Breaker size	lb-in	N-m
Up to 30 amp	20	4.0
40 to 100 amp	20	5.1

Table 14 Terminal block compression lug torque specifications

AWG wire size	Torque
or range	lb-in	N-m
#14 - #10	35	4.0
#8	40	4.5

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