Changing plugs, No Fuses?????
Sep 4th 2007, 7:58 pm
#31
Forum Regular
Joined: Jan 2007
Posts: 63
Re: Changing plugs, No Fuses?????
May i also add,
A standard lamp will have a 3amp fused plug. the ring main protected by a 30 amp mcb. The fuse will blow first which is why we put fuses in plugs. Also if the fuse blows, you change the fuse, no harm done. Trip the mcb and you kill the whole circuit, turning off computers, freezers and anything else on the circuit.
A standard lamp will have a 3amp fused plug. the ring main protected by a 30 amp mcb. The fuse will blow first which is why we put fuses in plugs. Also if the fuse blows, you change the fuse, no harm done. Trip the mcb and you kill the whole circuit, turning off computers, freezers and anything else on the circuit.
Sep 5th 2007, 12:43 am
#32
UK is Home
Thread Starter
Joined: Dec 2005
Location: Home- "Glasgow"
Posts: 1,137
Re: Changing plugs, No Fuses?????
Ok Guy`s
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
Last edited by Sunny_Glesga; Sep 5th 2007 at 12:52 am.
Sep 5th 2007, 12:59 am
#33
Where traffic lights rule
Joined: Aug 2006
Location: Brighton QLD
Posts: 2,460
Re: Changing plugs, No Fuses?????
Not an Electrician. but ......
If you have a 3amp fuse and the lamp has a fault and takes 10 amps, this will blow the fuse in the plug and not trip the 30amp breaker.
So it must be safer.
If you have a 3amp fuse and the lamp has a fault and takes 10 amps, this will blow the fuse in the plug and not trip the 30amp breaker.
So it must be safer.
Ok Guy`s
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
Sep 5th 2007, 1:03 am
#34
Proudly Deplorable
Joined: May 2003
Location: Alloha snack bar
Posts: 24,246
Re: Changing plugs, No Fuses?????
Ok Guy`s
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
From an Electricians point of view, Would it be safer to have a fuse in the plug or not if the correct fuse has been fitted and will always be replaced with the correct fuse if it were ever to blow.
1, Yes it would be more safe in one way or another?????????
2, No it would be dangerous and ineffective in one way or another?????????
Sep 5th 2007, 1:07 am
#35
Proudly Deplorable
Joined: May 2003
Location: Alloha snack bar
Posts: 24,246
Re: Changing plugs, No Fuses?????
IMO if you have proper RCD/MCB then fused plug makes no difference.
This is the last I'm going to post on this subject.
Sep 5th 2007, 1:44 am
#36
UK is Home
Thread Starter
Joined: Dec 2005
Location: Home- "Glasgow"
Posts: 1,137
Re: Changing plugs, No Fuses?????
I have decided to leave the main appliances in the house going through extentions with UK plug sockets and change the plug going to the wall sockets! My pesonal opinion is that if the RCD/MCB or whatever else is in this house were to fail hopefully only my fuse will blow and help prevent my Plasma TV, NEW washing machine blow up on me when the RCD/MCB fail to work as they should and as they have done not so long ago!
I think we should now lay this thread to bed!
Thanks guy`s for your input
I think we should now lay this thread to bed!
Thanks guy`s for your input
Sep 7th 2007, 3:26 am
#37
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Joined: Feb 2006
Location: Melbourne
Posts: 980
Re: Changing plugs, No Fuses?????
Danic;
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
Sep 7th 2007, 4:16 am
#38
UK is Home
Thread Starter
Joined: Dec 2005
Location: Home- "Glasgow"
Posts: 1,137
Re: Changing plugs, No Fuses?????
Not atall mate, i am not annoyed in anyway at any response from anyone on here.
Danic;
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
Sep 7th 2007, 4:46 am
#39
Worongary
Joined: Sep 2005
Location: GC hinterland
Posts: 10,288
Re: Changing plugs, No Fuses?????
a short on a device with a 3amp cartridge fuse on a 32amp mcb/rcd will trip the rcd way before blowing the 3amp fuse due to the much faster disconnection time of the rcd device ie typically 20ms ( milliseconds )
so having a fuse or not on an rcd protected circuit is next to usless
unless the fault is a slight overload ie device pulls say 8amps instead of >3
then the fuse would disconnect
regards steve
Sep 7th 2007, 9:02 am
#40
youngy73
Joined: Mar 2005
Location: kewarra beach, cairns
Posts: 940
Re: Changing plugs, No Fuses?????
Danic;
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
i do agree with you on the earthing systems in the Uk are better in my view but the MEN is whats used here mate thats all im saying i would rather have the UK earthing system.
As for fuses in plug tops they are OK, if when they blow people dont replace with a larger current capacity, i suppose there are swings & roundabouts for all suggestions on here, i hope i have not misled you & annoyed you at all, after all we all on here are trying to help others.
Sep 7th 2007, 9:24 pm
#41
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Joined: Feb 2006
Location: Melbourne
Posts: 980
Re: Changing plugs, No Fuses?????
steve`o;
thanks for the comments mate thats exactly what ive been saying on this thread the same as you the MCB will trip in m/sec's where the fuse may take 5 secs to blow if at all due to any small fault current.
thanks for the comments mate thats exactly what ive been saying on this thread the same as you the MCB will trip in m/sec's where the fuse may take 5 secs to blow if at all due to any small fault current.
Feb 16th 2008, 3:44 am
#42
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Joined: Mar 2007
Location: Kent to Central coast
Posts: 308
Re: Changing plugs, No Fuses?????
as already posted, all new Aus builds have rcd's mcb's etc
also in the uk all new builds have rcd's mcb's etc. some consumer units are split eg. lights have no rcd protection just mcb's
older properties with the old non mcb fuses, would a fuse in your plug have added protection yes it would.
in Oz and the uk there are still many older properties with the old style main fuses / fuse wire etc.
in the uk a 4way /8way extension lead for example would have a 13amp fuse, this protects the flex from being over loaded etc. what stops a user overloading the extension lead in Oz.
on a gas central heating system in the uk, the system is normally protected by a 3amp fuse, sometimes if the system has not been used for a while eg during summer the pump may seize (most new boilers have anti-seize built in), with the 3amp fuse in place the fuse normally blows if the pump is turned on when seized, if there is an rcd or mcb on the system it does not normally trip, so when we attend the none working heating system we normally free the pump and change the fuse Job done, sometimes the pump also needs changing but more often than not it only needs to be unseized and change of fuse.
Jacen
also in the uk all new builds have rcd's mcb's etc. some consumer units are split eg. lights have no rcd protection just mcb's
older properties with the old non mcb fuses, would a fuse in your plug have added protection yes it would.
in Oz and the uk there are still many older properties with the old style main fuses / fuse wire etc.
in the uk a 4way /8way extension lead for example would have a 13amp fuse, this protects the flex from being over loaded etc. what stops a user overloading the extension lead in Oz.
on a gas central heating system in the uk, the system is normally protected by a 3amp fuse, sometimes if the system has not been used for a while eg during summer the pump may seize (most new boilers have anti-seize built in), with the 3amp fuse in place the fuse normally blows if the pump is turned on when seized, if there is an rcd or mcb on the system it does not normally trip, so when we attend the none working heating system we normally free the pump and change the fuse Job done, sometimes the pump also needs changing but more often than not it only needs to be unseized and change of fuse.
Jacen
Feb 16th 2008, 4:51 am
#43
Joined: Jan 2005
Location: Asia Pacific
Posts: 4,922
Re: Changing plugs, No Fuses?????
as already posted, all new Aus builds have rcd's mcb's etc
also in the uk all new builds have rcd's mcb's etc. some consumer units are split eg. lights have no rcd protection just mcb's
older properties with the old non mcb fuses, would a fuse in your plug have added protection yes it would.
in Oz and the uk there are still many older properties with the old style main fuses / fuse wire etc.
in the uk a 4way /8way extension lead for example would have a 13amp fuse, this protects the flex from being over loaded etc. what stops a user overloading the extension lead in Oz.
on a gas central heating system in the uk, the system is normally protected by a 3amp fuse, sometimes if the system has not been used for a while eg during summer the pump may seize (most new boilers have anti-seize built in), with the 3amp fuse in place the fuse normally blows if the pump is turned on when seized, if there is an rcd or mcb on the system it does not normally trip, so when we attend the none working heating system we normally free the pump and change the fuse Job done, sometimes the pump also needs changing but more often than not it only needs to be unseized and change of fuse.
Jacen
also in the uk all new builds have rcd's mcb's etc. some consumer units are split eg. lights have no rcd protection just mcb's
older properties with the old non mcb fuses, would a fuse in your plug have added protection yes it would.
in Oz and the uk there are still many older properties with the old style main fuses / fuse wire etc.
in the uk a 4way /8way extension lead for example would have a 13amp fuse, this protects the flex from being over loaded etc. what stops a user overloading the extension lead in Oz.
on a gas central heating system in the uk, the system is normally protected by a 3amp fuse, sometimes if the system has not been used for a while eg during summer the pump may seize (most new boilers have anti-seize built in), with the 3amp fuse in place the fuse normally blows if the pump is turned on when seized, if there is an rcd or mcb on the system it does not normally trip, so when we attend the none working heating system we normally free the pump and change the fuse Job done, sometimes the pump also needs changing but more often than not it only needs to be unseized and change of fuse.
Jacen
Feb 17th 2008, 1:12 am
#44
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Joined: Mar 2007
Location: Kent to Central coast
Posts: 308
Re: Changing plugs, No Fuses?????
Feb 17th 2008, 2:01 am
#45
Forum Regular
Joined: Sep 2007
Posts: 235
Re: Changing plugs, No Fuses?????
I know how to solve the problem once and for all, Instead of changing all the plugs on all your appliances. Simply change all your Aussie sockets in the walls for the 3 pin British ones 
Easy Peasy
Easy Peasy