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breakdown
Electrical breakdown or dielectric breakdown is a process that occurs when an electrical insulating material, subjected to a high enough voltage, suddenly becomes an electrical conductor and electric current flows through it. All insulating materials undergo breakdown when the electric field caused by an applied voltage exceeds the material's dielectric strength. The voltage at which a given insulating object becomes conductive is called its breakdown voltage and depends on its size and shape. Under sufficient electrical potential, electrical breakdown can occur within solids, liquids, gases or vacuum. However, the specific breakdown mechanisms are different for each kind of dielectric medium.
Electrical breakdown may be a momentary event (as in an electrostatic discharge), or may lead to a continuous electric arc if protective devices fail to interrupt the current in a power circuit. In this case electrical breakdown can cause catastrophic failure of electrical equipment, and fire hazards.
1st time on here so hello all
been plumbing since 1980 and passed C & Guilds in 83 . Over the years have done allsorts of work both domestic and commercial. having reached the grand old age of 47 i think its about time i jacked the installing lark in and try my hand at repairing combis/ boilers...
hi everyone,
this morning my housemate woke up and went for a shower as usual but when he turned the boiler on instead of firing up it starting making this awful banging noise which you could hear throughout the house and was vibrating the radiators. the boiler would make a noise like it was...
Hi all, im new too this forum so go easy on me. Basically im a gas safe registered installer (with about 3 years experience) but i mainly do new central heating installations or general plumbing / bathrooms etc. now i obviously know the basic's when it comes to boilers but recently ive been...
Hi,
Anyone know of any good breakdown/servicing courses for boilers?
natwill
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hi all, just wondered if any of you guys have a second source of income to fall back on when it gets a bit quiet on the plumbing side? (not including the wifes income :)
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Hi fellow plumbers
i have been installing boilers heating plumbing etc for 18 odd years now ,never realy been into boiler servicing or breakdown work its an area i would like to now specialise in .i am going to book myself on mr-combi 1 day boiler course in bedford has any1 been on this course...
gaspipe
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Hi all, i am by no means an expert on boiler breakdowns and fault finding, i have had one or two times that i have had to call technical helplines to help find the faults, i was just wondering if anyone has done any good breakdown/fault finding/ repair courses,
i saw an advert for mr combi...
Hello all,
Can anyone recommend a good refresher training course on boiler maintenance and breakdown?
I completed a three year plumbing apprenticeship many years ago but left the business in 1998 and now lack the knowledge when dealing with Combi boilers etc.
There are several available on the...
Connor Williams
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