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Old 01-10-2021, 09:47 AM   #1
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water heater power

I'm helping a friend change the heating element on a 2018 coachman trail blazer toy hauler . we flipped off the breaker for h/w and the switch at the h/w heater and while disconecting the wires I got a little tickle, so I flipped off the main . so while waiting for new element I check the wires with a tester, I had all breakers on and had my wife flip them off one at a time and none of them stopped power to the element except the 30 amp main. is this right?
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Old 01-10-2021, 10:25 AM   #2
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No that's not right. The water heater should be on it's own breaker. Looks like you have some digging to do. Do you have a meter?
I would start by checking that you dont have a failed breaker by shutting all but the 30 amp off and checking for power on the outlet side of each one.
Good luck.
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Old 01-10-2021, 11:13 AM   #3
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Originally Posted by Dwilcox View Post
No that's not right. The water heater should be on it's own breaker. Looks like you have some digging to do. Do you have a meter?
I would start by checking that you dont have a failed breaker by shutting all but the 30 amp off and checking for power on the outlet side of each one.
Good luck.
Yes I have a meter and will check when friend gets back with element, I'm thinking this is why his element burned out in the first place. Thanks for your reply
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Old 01-10-2021, 11:25 AM   #4
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you say a little " TICK: ? As in a mild shock , not like if you touch the prongs on a house outlet. There may be a capacitor ! cant say where. EXAMPLE !! When you have a florescent light and it has been on , if you turn it off and remove the nut caps off of wires and grab both at the same time it will give you a light shock. that is the stored electricity in the capacitor. So dont use breakers just dont plug trailer in to power.
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Old 01-10-2021, 11:37 AM   #5
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you say a little " TICK: ? As in a mild shock , not like if you touch the prongs on a house outlet. There may be a capacitor ! cant say where. EXAMPLE !! When you have a florescent light and it has been on , if you turn it off and remove the nut caps off of wires and grab both at the same time it will give you a light shock. that is the stored electricity in the capacitor. So dont use breakers just dont plug trailer in to power.
I wish I could look at a wiring diagram for this unit but my toy hauler has the same w/h and converter and I just use the breaker to turn off w/h and have had no problems so far. as for capacitor, I don't see one anywhere and don't think it has one.
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Old 01-10-2021, 11:38 AM   #6
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You might have reverse polarity if using a homemade extension cord for shore power supply or a shore power receptacle that is not wired properly.
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Old 01-10-2021, 11:47 AM   #7
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You might have reverse polarity if using a homemade extension cord for shore power supply or a shore power receptacle that is not wired properly.
It has the power cord that came with unit and I wired the breaker at panel, but I will take a look at the plug where camper is plugged into, I never checked for that. Thanks for input.
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Old 01-10-2021, 01:42 PM   #8
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fonzie nailed it! I checked the 20 amp plugs on the pole and they were good, then I checked the out side plug on camper and it showed reverse polarity. after changing the hot and common on the 30 amp plug, every thing checked out. Thanks fonzie!! love this forum.
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Old 01-10-2021, 07:19 PM   #9
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Yet another reason I love my Progressive EMS. It would give you an error code for a miswired power pole. Please clarify what was miswired. The power pole, or the trailer?
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Old 01-14-2021, 06:07 AM   #10
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Yet another reason I love my Progressive EMS. It would give you an error code for a miswired power pole. Please clarify what was miswired. The power pole, or the trailer?
sorry, i was away for a while. it was the power pole. i have one of those cheep testers and didn't even think to use it.
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