any sparkys in the house?
22-09-2006, 09:19 AM
#1
any sparkys in the house?
here goes with the questions 
i need to put in a 30amp curciut in the fuse box to run the new compressor i've got, but are all the breakers the same?
or would i need to find out which one i've got to get a compatable breaker?
the fuse box in the garage is rated at 100 amps and i'm only running one lighting curcut, the security light and one set of plugs from it (5 amp, 5 amp and 13 amp) so i should have plenty spare (it';s only got 5 slots on it total)
it's been the best part of 15 years since i got my certificates for this sort of stuff and everyting has moved on, so can i even do this instal myself without getting osmeone in who's "qualified" to put it in?
can i get this breaker from the likes of b&q or wickes of the like then or does it have to be a specialist electricalicty shop?
thakns
i need to put in a 30amp curciut in the fuse box to run the new compressor i've got, but are all the breakers the same?
or would i need to find out which one i've got to get a compatable breaker?
the fuse box in the garage is rated at 100 amps and i'm only running one lighting curcut, the security light and one set of plugs from it (5 amp, 5 amp and 13 amp) so i should have plenty spare (it';s only got 5 slots on it total)
it's been the best part of 15 years since i got my certificates for this sort of stuff and everyting has moved on, so can i even do this instal myself without getting osmeone in who's "qualified" to put it in?
can i get this breaker from the likes of b&q or wickes of the like then or does it have to be a specialist electricalicty shop?
thakns
22-09-2006, 09:28 AM
#2
Professional Waffler
first you gotta find out what size protection (be it fuse or mcb) is feeding this board! the board itself is rated at 100amp but i bet its protected by something a little (a lot) smaller! so find what is feeding it
you do get different type of mcb's for different boards, but b&q will have them,, but a good electrical shop will have them and make sure they are the right ones if you just give them the make of the board
erally you do need a quailfied sparkie to do this work for you,, but as its your own house just say the new circuit has always been there
but if you do have a sparkie friend,, a continuity test and earth loop test would be nice for piece of mind
you do get different type of mcb's for different boards, but b&q will have them,, but a good electrical shop will have them and make sure they are the right ones if you just give them the make of the board
erally you do need a quailfied sparkie to do this work for you,, but as its your own house just say the new circuit has always been there
but if you do have a sparkie friend,, a continuity test and earth loop test would be nice for piece of mind
22-09-2006, 09:45 AM
#3
we've got 2 fuse boards in the main house, both supplied by wires that the electric board put there
i know we've got 7 breakers in one and about 9 in the other that are "live"
so the scenario is along these sorts of lines:
i need to find out which one feeds the fuse box in the garage, find the make, up the rating on that one so that it's good for the rating in the garage (assuming it not already rated for that, but seeing how the house was fuly rewierd 3 years ago i can't see that being a problem) find the one in the garage, find out which model it is to get the right rating for that one too
the next question is, do i need to go for a breaker rating hirer than the supply (as in cars you match the thickness of wire to the fuse capability so that the fuse blows before the wires melt if you catch my drift)?
so if i've got cable that is 10.5mm2 (i think thats the one i've got floating baout)would i need a breaker that was 32 amp or would i need one that was 30 or would i need one that was 27 or soemthing silly like that?
as i said, it's been a long time since i did this for a living and i can't rememebr the exact stuff i'm supposed to be doing
i'll be getting my sparky guy to fit it all up but it would be nice to have the stuff ready for him to fit in 10 minutes rather than spend the whole day (which i can't afford time OR money wise) trampsing around shops looking for something that is no longer available meaning i'd have to get a whole new fuse box for the garageanyway (it's about 10 years old)
i know we've got 7 breakers in one and about 9 in the other that are "live"
so the scenario is along these sorts of lines:
i need to find out which one feeds the fuse box in the garage, find the make, up the rating on that one so that it's good for the rating in the garage (assuming it not already rated for that, but seeing how the house was fuly rewierd 3 years ago i can't see that being a problem) find the one in the garage, find out which model it is to get the right rating for that one too
the next question is, do i need to go for a breaker rating hirer than the supply (as in cars you match the thickness of wire to the fuse capability so that the fuse blows before the wires melt if you catch my drift)?
so if i've got cable that is 10.5mm2 (i think thats the one i've got floating baout)would i need a breaker that was 32 amp or would i need one that was 30 or would i need one that was 27 or soemthing silly like that?
as i said, it's been a long time since i did this for a living and i can't rememebr the exact stuff i'm supposed to be doing
i'll be getting my sparky guy to fit it all up but it would be nice to have the stuff ready for him to fit in 10 minutes rather than spend the whole day (which i can't afford time OR money wise) trampsing around shops looking for something that is no longer available meaning i'd have to get a whole new fuse box for the garageanyway (it's about 10 years old)
22-09-2006, 09:56 AM
#4
Professional Waffler
[quote-]up the rating on that one so that it's good for the rating in the garage[/quote]
oooow dont do that,,,, find the rating first
you rate the fuse for the maxium curretn carrying capacity of the cable (this includes correction factors)
there is nothing wrong with running a massive cable and having it proected by a small fuse,,, but you cant run a thin cable and have it protected by a massive fuse
if you have 10mm cable there,, use it,,, cable is expensive at the mo
you could get away with a small cable,, but as you have it,, use it )
oooow dont do that,,,, find the rating first
you rate the fuse for the maxium curretn carrying capacity of the cable (this includes correction factors)
there is nothing wrong with running a massive cable and having it proected by a small fuse,,, but you cant run a thin cable and have it protected by a massive fuse
if you have 10mm cable there,, use it,,, cable is expensive at the mo
you could get away with a small cable,, but as you have it,, use it )
24-09-2006, 08:02 AM
#7
spent 2 hours trying to shift the bastid thing into the garage yesterday so the last thing i needed was to find out that the whip hose to connect to the regulator was the wrong size 
plenty of
last night though 
i'll find the corect pipe, get it all fitted up, wired up, sparky to make sure it's all ok and passes any safety stuff, run it up and jobs a good un
thanks for the help
plenty of
last night though i'll find the corect pipe, get it all fitted up, wired up, sparky to make sure it's all ok and passes any safety stuff, run it up and jobs a good un
thanks for the help
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