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Microwave internal fuse

  • 12-05-2017 8:51pm
    #1
    tony glenn
    Registered Users, Registered Users 2 Posts: 609 ✭✭✭


    The microwave we use in our motorhome blew it's internal fuse a while back. I didn't have the small 10 amp glass-type so I put in a normal domestic 10 amp fuse. It worked fine half a dozen times on test at home, so I put it back in the motorhome.
    Now here's the thing. Twice this week, (first time out since) on two different camp-sites, I switched it on and it immediately tripped the hook-up fuse on-site. However, once the hook-up was re-set, it worked fine for that cooking session.
    There's three power settings on the microwave, Low/Medium/High, so would it make sense to switch on at Low, then maybe up it to Medium and leave it there?
    BTW, is there any difference between the normal domestic 10 amp fuse and the smaller glass-tube 10 amp that originally blew?
    PS: This microwave has worked fine with no problems on any site for ten years prior to this season.......


Comments

  • #2
    homewardbound11
    Registered Users, Registered Users 2 Posts: 930 ✭✭✭homewardbound11


    Dump it or have it repaired .

    I think there are several limit switches on the door that if not working correctly or in the right order ,may trip the fuse . I might be wrong but I wouldn't mess around with it .


  • #3
    [Deleted User]
    Posts: 31,118 ✭✭✭✭ [Deleted User]


    The clear fuse was possibly a fast blow type, it is one that is designed to blow quickly if there is a current surge that can sometimes occur if there is an earth leakage when switching on.
    The tripping of the RCD at the camp site appears to indicate a small earth leakage, possibly due to a faulty capacitor that draws current to earth when first started.


  • #4
    tony glenn
    Registered Users, Registered Users 2 Posts: 609 ✭✭✭tony glenn


    Many thanks for both (speedy) replies.
    I accept that there must have been a problem that caused the original fuse to blow, and that the domestic fuse might be what's keeping it from blowing again. Also I realise that a new micro is the best way to go, we've had ten years out of this one.
    BUT....it's tempting to hang on to this one for another season. It seems to work fine as long as the initial switch-on is at the Low power setting, then eased up to Medium. What's the worst that could happen? Should I make sure that my wife is in charge of switch-on, whilst I stand outside behind a tree?


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