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Why would only one side of a 240V water heater line blow fuses periodically when elements and voltages test OK?
=== === == == (LIFE SAFETY WARNING! [disclaimer] Electricity is dangerous!
You can be injured or killed!
Improper installations can cause fire, injury and death!
Why would the same FUSE [important] keep blowing when conductors and voltage seem ok?
Troubleshooting is the final measure of skill and knowledge!
It is the knowledge of how electricity works, and of the methods and materials used to create a functional wiring system, that enables a skilled troubleshooter to locate the problem and repair it.
Where should the "voltage" be, and how does it get there?
And where shouldn't it be?
I see two possible causes of your problem ...
1] There is a very high current draw, caused by an intermittent fault to ground in one conductor at some as yet undiscovered point.
2] There is some heat source causing the FUSE [a melting thermal device] to open when there is normal current because there is not enough differential remaining between the fuse's ambient temperature and the melting point of the fusible element [loose fitting fuseholder, loose screw connection, loose conductor termination, and so on ...]. ... or, of course, the installation was done by a hack and there is another load somewhere you haven't recognized ...
== == <><><> Replace the elements, they are inexpensive, next check the wiring to ground. Those are the things a homeowner can do. If there is still a problem call a Pro. == == <><><> Thanks, Robert. Looking closer, I found that one of the fuse holders in the disconnect box was totally shot. I am surprised I did not have a fire. Replaced the old disconnect with a new one using breakers. Everything fine now. <><><>
As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
What else can I help you with?
Do fuses protect against - A short circuits B overoading C lightning surges D large ground faults?
Short circuits.
Why do fuses have numbers and letters on them?
Fuses have numbers and letters on them to indicate their current rating and type, which helps in identifying their specifications. The numbers typically denote the amperage rating, indicating the maximum current the fuse can handle before blowing. Letters may indicate the fuse's characteristics, such as delay or fast-acting properties. This labeling ensures proper selection and replacement to protect electrical circuits from overloads.
Where are the fuses in a 407 wagon?
In a Peugeot 407 wagon, the fuses are typically located in two main places: the engine compartment and the passenger compartment. The engine compartment fuse box is usually found near the battery, while the passenger compartment fuse box is often located behind a cover in the dashboard, on the driver's side. It's advisable to consult the vehicle's owner manual for specific locations and diagrams.
How do you take out square fuses?
To remove square fuses, first ensure that the power is turned off to the circuit to prevent electrical shock. Use a fuse puller or your fingers to grasp the fuse firmly, twisting it gently if necessary to loosen it from the socket. Pull it straight out without rocking it side-to-side to avoid damaging the fuse holder. Always check the fuse's condition and replace it with the same type and rating if needed.
Why are there different sizes of fuses?
Different sizes of fuses are designed to accommodate varying electrical loads and protect circuits from overloads and short circuits. The size of a fuse determines its current rating, which indicates the maximum current it can handle before blowing. Using the appropriate fuse size ensures that it will interrupt the electrical flow when necessary, safeguarding equipment and preventing potential fire hazards. Additionally, specific applications may require different fuse sizes based on voltage ratings and physical space constraints.
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