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Fuses are sized to protect conductors === === == == (LIFE SAFETY WARNING! [disclaimer]

Electricity is dangerous!

You can be injured or killed!

Improper installations can cause fire, injury and death!

Are you qualified to do this work?)

National Electrical Code definition, NFPA 70 2005 Article 100 I: Qualified Person. "One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training on the hazards involved."

Changing from a 15 amp fuse to a 20 amp fuse because of load requirements would be over fusing, unless the wire were adequately sized for that current level.

If there is a 15 amp fuse, it is probably because the wire is only rated for 15 amps.

Redistribute the load or run additional circuits.

Improper fuse size will allow overloading of the circuit, with possible conductor damage and fire as a result.

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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.

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Q: Can you upgrade from a 15A to a 20A fuse?
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