Table of Contents
What size wire do you need for electric heater?
A 240-volt baseboard heater requires its own dedicated 20-amp or 30-amp 240-volt electrical circuit. A 20-amp circuit can safely provide 3,800 watts of power, while a 30-amp circuit is suitable for up to 5,700 watts. The standard circuit cable for 20-amp circuits is 12-gauge cable; 30-amp circuits need 10-gauge cable.
How many amps does a 15kw heater pull?
Most air handlers with 15 KW of strip heat. Can often use a 60 amp and 30 amp circuit. The 30 amp has the blower and 1-5KW heater, the 60 amp has the other 10 KW of strip heat.
What cable is used for electric heaters?
Electric heaters are sized by wattage. See “Sizing Your Heater, below” to determine the right one for your space. For a heater up to 2,880 watts, run a cable with two 14-gauge wires and one ground wire (called 14-2 with ground); run 12-2 cable with ground to handle up to 3,840 watts.
How do I know what size wire I need?
To determine what gauge wire you need, consider the carrying capacity and the amount of current the wire needs to conduct (measured in amperage or amps). Wire gauge is directly related to how many amps you need to run through it. The distance you need the wire to go can also impact the gauge of wire you need.
How many amps can 12 gauge wire handle at 240 volts?
A 12 gage wire (AWG, American wire gage, copper wire) is rated at 16 amps constant load at either 120 volts or 240 volts.
What size wire do I need for a 15 kW heater?
15kw is better than 60 Amps. If you are positive that is indeed #4 cable…. you must use a sub panel. The heat probably requires an 80A breaker and the air handler would need a 15A circuit. Your installer should be looking into this wiring.
What size wire do I need for 20 kW heat strips?
For 20 KW, it would be 2-6/2 wire runs, and 2 60amp double pole breakers.
Can I run a 2kw heater on an extension lead?
Just make sure your lead is fully extended and it will be ok. Yes partly that and also because someone might use a 20m extension lead with 15m of it still coiled up! Just make sure your lead is fully extended and it will be ok.