Any electrician's here?
#1
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Can you tell me why my water heater keeps tripping the breaker?
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Nope, nothing else on it. Where would I clamp the amp meter to, the breaker itself?
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we had a bad breaker, similar issue, instead of it measuring and being activated at overload over 15 amps, it would activate lower as it gets old so when i turn on my microwave it would pop it once in a while, then few months after it started becoming more common to where we couldnt use the microwave as you'd turn it on and it would pop a sec later. Changed it with a new one and havent had issues since, i'd say start cheap.
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Could be a heater element has corroded and is leaking current to ground (will trip GFCI type breakers). Unplug the leads to the elements and check element to ground resistance - old school analog meters are the best for this... Check all conductors (wires) to make sure nothing is chafed, rubbed, arc marks, soot, & terminations are tight - and be sure the power is off and confirm before starting the job!
If everthing else checks out, (3rd thymer & triple88a's thoughts) probably just the breaker is flaking out...sh*t happens. I had a 200a main breaker tripping without anything going on with the small distribution breakers - it was old (and the most expensive!).
I would lean toward the weak breaker since the problem is intermittent (a ground fault should not be...)
If everthing else checks out, (3rd thymer & triple88a's thoughts) probably just the breaker is flaking out...sh*t happens. I had a 200a main breaker tripping without anything going on with the small distribution breakers - it was old (and the most expensive!).
I would lean toward the weak breaker since the problem is intermittent (a ground fault should not be...)
Last edited by secretsquirrel; 01-31-2010 at 09:41 PM. Reason: Ninja edit for clarification - Tito's Vodka is hampering the diag skills...
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Could be the heater element has corroded and is leaking current to ground (will trip GFCI type breakers). Unplug the leads to the element and check element to ground resistance - old school analog meters are the best for this (of course after turning off breaker and confirming there is no voltage!). Or maybe just the breaker is flaking out...sh*t happens. I had a 200a main breaker tripping without anything going on with the small distribution breakers - it was old (and the most expensive!).
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If an element/s is bad, sears.com has a great parts site with exploded diagrams, part #'s etc. (for all kinds of appliances). Once you get the part number, google is your friend (read - super cheap). I did find a water heater element in stock at the local hardware store (Lowes, HomoDepot, Sears Service Ctr - don't remember) when I needed one NOW for the mother-in-law. GL
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And note that electric heaters tend to be 220v, so they have two hot wires, typically one red and one black. Current flow through these two wires is equal buy opposite (they are essentially a differential pair) so you need only clamp around one of the two. If you clamp over both, you'll read zero.
Easiest place depends on your specific layout. You can pull the cover off the breaker panel, you can open the wiring cover at the heater, there may be an easily accessible J-box, etc.
Easiest place depends on your specific layout. You can pull the cover off the breaker panel, you can open the wiring cover at the heater, there may be an easily accessible J-box, etc.
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Thanks fellas, I'll work on it this weekend and update ya'll.
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Good new fellas, I replaced the elements and it's good to go. The old ones were really nasty and over kill according to the dude at the local plumbing store. The old ones were 5500 watts at 240 volts. So I went with 4500 watt.
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Last edited by levnubhin; 02-07-2010 at 06:53 PM.
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FYI, I typed that and attached the pic from my iPhone. I love this thing. That's all lol.
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