SAFEBAR		100A Steel	150A Steel	160A Copper	250A Copper	400A Copper
Nominal Current		100amp	150amp	160amp	250amp	400amp
Intermittent Current		140amp	175amp	190amp	300amp	450amp
Cross Sectional Area		63mm	102mm	50mm	63mm	102mm
Resistance in Ohms		0.00187	0.00114	0.000370	0.000275	0.000169
Coefficient of Expansion		0.0000122	0.0000122	0.0000162	0.0000162	0.0000162
Max Temp for 100% Duty		25 Degrees	25 Degrees	25 Degrees	25 Degrees	25 Degrees
Insulation Shroud		PVC	PVC	PVC	PVC	PVC
Bar Length		4.5M	5M	4.5M	4.5M	5M
Hanger Support pitch		1.5M	2M	1.5M	1.5M	2M
Pitch btw Hangers		60mm	60mm	60mm	60mm	60mm
Pitch btw Cluster Hangers		40mm	40mm	40mm	40mm	40mm
Expansion section Above		130m	130m	130m	130m	130m

When selecting Liftco Safebar, first determine the electrical load requirements of the machinery
Secondly calculate the volt drop potential along the length of the system:

Volt drop = length x resistance x current x 1.73

When determining volt drop remember to take into account start up current demands which are higher than normal running currents
Consult relevent motor manufacturer specifications
Volt drop must not exceed 5% along the length of the system

To reduce volt drop the following options can be considered:

• Install a centre feed or multiple feeds
  A centre feed effectively halves the length of the system
• Use a larger capacity Safebar or a Copper Safebar with low ressitance and high conductivity properties

Note that the ambient temperature, the heating of the conductor bar itself as a result of the duty cycle as well as the type of environment can also influence the choice of Safebar required

Please consult the factory if in doubt as to volt drop requirements