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What size circuit breaker and wire should be used for two 1500 watt livestock water tank heater at 300 ft from power source?
Wiki User
∙ 9y ago
You have a 3000 watt load at 300 ft from the power source. Assuming a 240 volt supply voltage, the current is 12.5 amps. The voltage drop should be 5% or 12 volts, so the total resistance should be 1 ohm or less.
With 600 ft of wire (2 wires) the allowable resistance per foot is 1/600 ohms, or 0.0047 ohms per metre. A 1 sq.mm. wire has a resistance of 0.0168 ohms/metres, so you need wire of 0.0168/0.0047 sq.mm., that is 3.57 sq.mm. Use wire with a cross section of 4 sq.mm. That is 11 AWG or 13 SWG. If these sizes are unavailable, use the next larger size (smaller gauge number).
Wiki User
∙ 9y ago
For two 1500 watt water tank heaters located 300 ft from the power source, you would need a 20 amp circuit breaker and 12 gauge wire for a 120 volt system, or a 10 amp circuit breaker and 14 gauge wire for a 240 volt system. It is always recommended to consult a licensed electrician to ensure proper safety and code compliance.
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A 3 kW immersion heater circuit should be provided with a dedicated 15 Amp circuit that is protected by a 15 Amp circuit breaker and wired with appropriately sized cables (typically 14 AWG for residential wiring in the US). Additionally, a Ground Fault Circuit Interrupter (GFCI) protection may be required for safety.
Can a circuit breaker be tripped by using 20 amp sockets instead of 15 amp sockets?
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Why does my 1500 watt heater consistently blow my 15 amp breaker fuse?
A 1500-watt heater draws approximately 12.5 amps, which is close to the 15-amp capacity of the breaker. If there are other appliances drawing power on the same circuit, it could easily trip the breaker. You may need to run the heater on a circuit with fewer devices drawing power to prevent overloading the breaker.
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What should a 3 kW immersion heater circuit must be provided with?
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A parallel circuit breaker should be connected in a parallel to the circuit it's protecting?
For a circuit breaker to protect anything, it must be wired in series with whatever it is protecting.
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A circuit breaker protects the wires that the devices are connected to. If the devices that are connected to the circuit are 20 amps the wire size should be #12 wire fed from a 20 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. If the devices that are connected to the circuit are15 amps the wire size should be #14 wire fed from a15 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. Putting 20 amp sockets on this 15 amp circuit will work but the circuit is limited to the amount of load that can be plugged in. You will not get the full capacity of the 20 socket because the breaker will trip at 15 amps.
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