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Old 03-10-2013, 05:37 PM   #1
marx3006
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Building first electric system and almost finished. Ran a test and all works well except the heating element does not get hot (I'm told that's important...). I've tested tested the leads on the element and I am getting 115V on each one. Do I have a faulty element? I purchased a Camco 02963 5500W 240V from Amazon. I've hesitated touching the multi-meter to both hot leads at the same time, will this read 230V or will I just fry my meter? So far I've touched one hot lead with the ground to get the 115V. I've also verified the 3-prong outlet on my control panel for the element is reading correctly.

Thanks in advance for your help.
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Old 03-10-2013, 05:43 PM   #2
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You will not fry your meter by touching both leads to both hot lines on your element. As a matter of fact, that's how you're going to have to do it to tell if you actually have 240VAC at your element. Just make sure your multimeter is set to read V AC.
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Old 03-10-2013, 06:05 PM   #3
marx3006
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OK, I tested the contacts on the element and they read 0. I test the outlet and get 230. Since I don't get anything on the other end I am left with the conclusion the cable is bad. Will pick up another at hardware store tomorrow and try again.
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Old 03-10-2013, 06:20 PM   #4
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Just out of curiosity (and for your safety) is that outlet protected by a GFCI breaker? Also, what are you using to control the power to the element?
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Old 03-10-2013, 07:13 PM   #5
marx3006
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I put a GFCI breaker in the panel which isn't far away. The standard PID to SSR with a contactor to turn it on and off. Based on one of PJ diagrams.
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Old 03-10-2013, 08:22 PM   #6
crane
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You tell if the cable is bad by measuring continuity at both ends. With the cable unplugged from your control panel measure each wire at the terminal of the element and at the tab in the plug. You should measure something like 0.1 ohms. If you don't then you know which wire in the cable is bad. Check your crimp connections. You may be able to fix it without buying a whole new cable. If you installed the plug in the other end check those connections too.

 
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Old 03-11-2013, 11:53 AM   #7
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If you measure 115V from each lead to the neutral lead but measure 0V between the two hot leads then you probably have them both hooked up to the same side of the supply.

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Old 03-11-2013, 12:21 PM   #8
P-J
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Quote:
Originally Posted by marx3006 View Post
I put a GFCI breaker in the panel which isn't far away. The standard PID to SSR with a contactor to turn it on and off. Based on one of PJ diagrams.
Which diagram are you using?

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Old 03-11-2013, 02:19 PM   #9
marx3006
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Quote:
Originally Posted by P-J View Post
Which diagram are you using?

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I am using this diagram: http://www.pjmuth.org/beerstuff/imag...-BIAB-30d6.jpg

At work right now but when I get home I will retrace all wires and check them again. I'm generally very cautious and particular but have been know to make mistakes (just ask my wife...).
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Old 03-11-2013, 05:23 PM   #10
P-J
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Can you post a picture of the inside of your controller? I'm interested in how you have the contactor wired.

Also: The contactor has a coil voltage of 120V - correct?

P-J

 
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