Fuse Box

 

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Applications: Electricity
** Lights, Appliances, Electronics
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Relevant Background: "In North America, fuses were used in buildings wired before 1960. These Edison base fuses would screw into a fuse socket similar to Edison-base incandescent lamps. Ratings were 5, 10, 15, 20, 25, and 30 amperes. To prevent installation of fuses with an excessive current rating, later fuse boxes included rejection features in the fuse-holder socket, commonly known as Rejection Base (Type S fuses) which have smaller diameters that vary depending on the rating of the fuse. This means that fuses can only be replaced by the preset (Type S) fuse rating. This is a North American, tri-national standard (UL 4248-11; CAN/CSA-C22.2 NO. 4248.11-07 (R2012); and, NMX-J-009/4248/11-ANCE). Existing Edison fuse boards can easily be converted to only accept Rejection Base (Type S) fuses, by screwing-in a tamper-proof adapter. This adapter screws into the existing Edison fuse holder, and has a smaller diameter threaded hole to accept the designated Type S rated fuse...Some companies manufacture resettable miniature thermal circuit breakers, which screw into a fuse socket.[13]...Fuses are widely used for protection of electric motor circuits; for small overloads, the motor protection circuit will open the controlling contactor automatically, and the fuse will only operate for short circuits or extreme overload....Where several fuses are connected in series at the various levels of a power distribution system, it is desirable to blow (clear) only the fuse (or other overcurrent device) electrically closest to the fault. This process is called "coordination" or "discrimination" and may require the time-current characteristics of two fuses to be plotted on a common current basis. Fuses are selected so that the minor, branch, fuse disconnects its circuit well before the supplying, major, fuse starts to melt. In this way, only the faulty circuit is interrupted with minimal disturbance to other circuits fed by a common supplying fuse...Where the fuses in a system are of similar types, simple rule-of-thumb ratios between ratings of the fuse closest to the load and the next fuse towards the source can be used..." ("Fuse", https://en.wikipedia.org/wiki/Fuse_(electrical)#Fuse_boxes)
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Relevant material on fuse and fuse box: "Fuses that Frequently Trip for no Apparent Reason....
...Fuses are meant to protect a home and all associated equipment from electrical overloads. There can be times when a fuse trips or “blows” frequently and subsequently needs to be reset. This is often a symptom of bad wiring or a short circuit contained within the box. An electrician will be able to discover the exact root of this problem.....
...Fuses that are Loose or Fall Out
Melted Fuses and/or Burnt Terminals....
.......Fuses are meant to sit within their terminals snugly. However, there are times when one or more becomes loose. This might signal that the terminals have become corroded or otherwise mechanically impaired. Once again, always seek the advice of an expert as opposed to trying to sort the problem out yourself.....
.....Have you recently noticed strange hissing or popping noises coming from the fuse box? Does it emit a strong or acrid odour? These are concrete signs that there is a serious internal issue. Once again, do not wait to speak with a professional. Such problems will not disappear on their own and in severe cases, a fire could occur.
.....This is a definite signal that something is awry. Burnt fuses or melted terminals are the result of overheating; a sign that there is a serious problem with the fuse box...... ...Strange Smells or Sounds Emitting from the Fuse Box
.....A fuse box is one of the most important electrical components within your home, so it only makes sense that regular maintenance and safety checks are critical. Please do not hesitate to use this article as a quick checklist if you suspect that an issue may be present. " ("10 Aug Common Fusebox Problems To Look Out For", https://pulseelectrix.co.uk/common-fusebox-problems-to-look-out-for/)
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Relevant Insurance Coverage:
a. Liability both personal and business for body injury and property damage. Liability of a landlord . Liability of children, Employers liability for employees
b. Travel & health c. Installation floater d. Home office endorsement
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Relevant Coverage: 
A. Auto Insurance - Comprehensive (All perils) 
B. Liability Insurance 
C. Travel and Health Coverage 
D. Life Insurance
E. Life Jacket, panic button, anti-drowning bracelet, GPS Tracker
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Location: North America

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