No. The black is 220, the red is 220, and the ground serves as the neutral.
the last answer "no" is correct but the reason is not. the ground is still a ground. the red is 110v and the black is 110v. together they are 220v. the neutral or (common) is for a 110v return. for example a stove or a dryer will have 2 hots a common and a ground because they use 220v and 110v. 220v to power the heating elements and 110 for the controls, light bulbs or the outlet on a stove. A construction heater only uses 220v and only requires the two hots and the ground for safety.
Any ground wire has to be connected to an independent ground wire that returns directly to the distribution panel and not to the neutral of the circuit.
This is only valid in parts of the work using 110/220 Volt split phase power system. There will be 110V from each of the hot leads to ground/neutral, so connect your outlet to only one of the hot leads, the neutral lead and the earth ground lead. This may be a problem with a dedicated 220V circuit as there will likely be no neutral line. Another note - this could well cause an unbalanced electrical load across the two pole breaker. If the breaker has a rating of 20A and the 110V circuit draws much of that current, the heater will likely trip the breaker.
In a typical electric spa heater setup, L1 and L2 are the two hot wires for a 240-volt system, and the ground wire provides safety. The blue wire marked "N" is likely intended as a neutral wire, but in a 240-volt system, a neutral is not always used; it may instead be a designation for a different function depending on the specific wiring configuration. It’s important to consult the manufacturer’s documentation or a qualified electrician to confirm the purpose of the blue wire in your specific setup.
Answer for UK, Europe and countries running a 50 Hz supply service.Yes. Live, Neutral and Earth wireAnswer for USA, Canada and countries running a 60 Hz supply service.In North America there are only two wires that are used as current carrying conductors. These are connected to a 20 amp two pole breaker with #12 copper wire. This is classed as a two wire cable as the ground wire, not being a current carying conductor, is not counted in the wire count. This is because all cables for home building in North America have ground wires. The only exception to this is in flexable cord sets (cabtire) where the ground wire has to be counted when ordering a cable.
the simplest solution is by connecting two 120v 3amps heater in series , the same can be used directly on 240v. However the current drawn will still be 3 amps & Not 1.5 amps. The heater output power will be double that of a single heater running on 120v. ( or equvalent to two heaters operating on 120v. supply ) A more expensive method is to use a stepdown transformer which can be powered on 240v & connect the heater on the transformer 120v side. this method will consume approx. 1.5 amps from the 240v supply.
Any ground wire has to be connected to an independent ground wire that returns directly to the distribution panel and not to the neutral of the circuit.
This is an indication that your heater core is leaking. To stop the leaking you will have to replace the heater core or stop using your heater.
If the heater is rated as a 3 phase 480 volt heater then a neutral is not needed. If the voltage stated is 277 volts three phase then a neutral is needed.
No, not really. The two hot legs can be opposite legs of a 120/240 V split phase power source. You still do need a protective earth ground, however, but the heater itself does not require a grounded neutral to run.
does a water heater require a ground wire?
Car will make when running even if heater core is not burned out.
Problem solved: Bought a used heater control, installed it in minutes, and all is well.
is a slow running fan heater going to give same heat as a fast fan heater if both 2000 running at
You do not have to turn the heater on until you are ready to heat the water, some installers put a tee or bypass before the heater so the water does not go thru the heater many do not since the heater is on the clean side of the filter, some people just want a bypass valve their in case the heater fails they can keep the water flowing around the heater, Take the cover off, start the filter up, start vacuumimg, when ready add your chemicals. continue running the filter get your water tested, when you feel you are about ready too swim turn the heater on too warm the water if you desire to.
no
Yes it can be done that way. Just make sure to use a double-pole breaker to ensure each wire is on an opposite phase.
You have to turn the heater on, by running to the right on it.