You are a journeyman electrician in an industrial plant. You have been assigned the task of connecting a 25-kW electric heater to a 240-V, single-phase panel. The heater is located in an area with an ambient temperature of 90°F. The conductors are to be copper with Type TW insulation. The heater is expected to operate for more than three hours at a time. What size conductors would you use to connect this heater? Is this correct?
You are a journeyman electrician in an industrial plant. You have been assigned the task of connecting a 25-kW electric heater to a 240-V, single-phase panel. The heater is located in an area with an ambient temperature of 90°F. The conductors are to be copper with Type TW insulation. The heater is expected to operate for more than three hours at a time. What size conductors would you use to connect this heater? Is this correct?
Chapter20: Special-purpose Outlets For Ranges, Counter-mounted Cooking Unit , And Wall-mounted Oven
Section20.2: Wall-mounted Oven Circuit And Free-standing Range
Problem 10R
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You are a journeyman electrician in an industrial plant. You have been assigned the task of connecting a 25-kW electric heater to a 240-V, single-phase panel. The heater is located in an area with an ambient temperature of 90°F. The conductors are to be copper with Type TW insulation. The heater is expected to operate for more than three hours at a time. What size conductors would you use to connect this heater?
Is this correct?
I=P/E
I=25000 W/ 240 V
I= 104.17 amps x 125%
I= 130.21 amp/ .96
I= 135.63 amp
2/0 AWG conductor will be needed
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