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Water heater keeps popin the breaker replaces breaker still no good. new heater just installed all wires are good

Posted / edited by AnonymousUser on : 17-09-2018

Answers :

I assume this is a 240 volt water heater that runs on a 30 amp circuit. Read the instructions that came with the new water heater to be sure. If the wires are connected correctly then you have a defective water heater. Let's first make sure it is wired correctly. Turn the breaker off and take a look at it. It must be a 30 Amp breaker and the wires going to the water heater must be 10/2 with ground. This is an orange wire. If you cannot see the water heater from the service panel it must be wired to a disconnect box. Look at the breaker and make sure the red & black wires are tightly connected to the double pole breaker and the copper wire is connected to the ground bar. At the disconnect box (if applicable) the red/black wires from the service panel must be connect to LINE and ground to ground bar. The wire going to the water heater from the disconnect box is connected to LOAD. It is easy to get these mixed up because they are not always in the same location and are hard to read on some disconnect boxes. Look carefully and make sure they are correct. At the water heater you connect Black to Black and Red to Red. Make sure the ground is connected tightly and none of the wires are touching each other. Use wire nuts and then tape the connections with electrical tape. You should not have applied power to the water heater until it was full of water. If you did then your burnt out the electrodes. I would suspect you have a short somewhere or the water heater is defective.
Most likely you have a bad heater, element or regulator, first turn off the breaker and look at the wires in the connector box on the heater, if they have no stripped insulation make sure the wire nuts are tight and are touching metal on the end of the wires, if there is insulation between the wires fix it. Next remove the covers off the heating elements and with an ohm meter on ohms and power off disconnect one wire from heating element touch one end of the element to the metal on the heater and the other end of the tester on the heating element screw, if you get a reading the element is bad, this does happen, next try the bottom heating element taking off one wire and doing the same, if you get a reading there then it's the element that’s bad. Next touch the ohm meter to the two screws with one wire on the element not touching the one disconnected wire you should get a slight reading, the meter will move maybe an inch, however if it moves all away over to the opposite side it means the element is shorted out and will have to be replaced, at this time call the company you bought it from it's under warranty, put it back together and let them replace it at no charge to you. However if you want to fix it yourself them supplying the part turn off the heater water and power ad drain the tank then buy the socket that fits the element then unscrew it and replace it with a new one. Once it is installed open the water valve on the hot side in the bathroom or kitchen depending whichever is closest and wait for all air to be out of the system. Once the air is out then turn heated back on. Hydrogen sulfide gas can cause an explosion that is why it is important to have the tank full before turning on power to the heating element. This is especially so for gas operated heaters and where you have well water.
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