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General Workshop Discussion
Scrolling - Scroll Saws
Which Fuse ?
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<blockquote data-quote="Spectric" data-source="post: 1519910" data-attributes="member: 21600"><p>Changing the rating or type of protective device is a change of the design and therefore should only be done following investigation and testing to ensure that the circuit can withstand the higher fault current and energy let through, ie no permeant damage due to the fault current. So in this context the above statement is correct but </p><p></p><p>This cannot be assumed because often the OEM will use a protective device on the PCB, this then leaves the fuse in the plug to protect the cable from short circuit conditions. Fuses do not protect against overload fault conditions, that is why motors use overload devices to protect the system, just look at a DOL starter and again this protection is often part of the PCB or starter circuit.</p></blockquote><p></p>
[QUOTE="Spectric, post: 1519910, member: 21600"] Changing the rating or type of protective device is a change of the design and therefore should only be done following investigation and testing to ensure that the circuit can withstand the higher fault current and energy let through, ie no permeant damage due to the fault current. So in this context the above statement is correct but This cannot be assumed because often the OEM will use a protective device on the PCB, this then leaves the fuse in the plug to protect the cable from short circuit conditions. Fuses do not protect against overload fault conditions, that is why motors use overload devices to protect the system, just look at a DOL starter and again this protection is often part of the PCB or starter circuit. [/QUOTE]
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General Workshop Discussion
Scrolling - Scroll Saws
Which Fuse ?
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