The drawings my father did and I did in the 1940s and 1980s ; and when I sold the property the drawings of the electrical wiring and plumbings ,hidden, were handed over to that doctor who purchased them and he was stunned. At those times of my father as well as mine there were no laptops or computers or cell phones, but only the Engineers who drew the charts after the inspections before closing the walls and painting. ONE THING IS CERTAIN; KNOWLEDGE ACQUIRED AT THE INAPPROPRIATE AGE IS USELESS AS THE APPLICATION MAY NOT TAKE PLACE. KNOWLEDGE PERFECT IS WELCOME. KNOWLEDGE OF "BASIC" IN THE PROGRAMMING i LEARNT IN 1980S , NO ONE TALKS TODAY; SHOULD WE LEARN IT NOW OR KNOW ABOUT IT NOW?; NOW ASSEMBLY LANGUAGE IS CHANGING BY THE MACHINE OPERATIONS; HENCE ONLY VEN REFINED COMPUTER ENGG HAD TO BE UPDATED. AGAIN, SO MANY ADVERTISEMENTS ARE SEEN IN MEDIA; FIRST OF ALL THE REACH OF THE PRODUCTS ARE DOUBTFUL; AND SALE WAS/IS LIFTED UP ONLY BECAUSE OF THE ADVT IS AGAIN DOUBTFUL; WE BLINDLY FOLLOW THE USA PATTERN; BUT WHETHER OUR PEOPLE HAVE KNOWLEDGE OF SUCH LEVELS IS NEVER ANALYSED. IT WAS ONCE WASHING POWDER NIRMA WHICH SOLD WELL; TODAY NIRMA IS UNKNOWN BUT KATRINA KAIF ALONE IS SEEN; IT IS BLACKMONEY STRATEGY OF CONVERSION; BUT WE ARE ALL DOING A MEDIA SHOW, KEEPING THE PEOPLE AT STAKE. ONLY THOSE WHO CAN AFFORD TO BUY, OR WHO ARE IN NEED OF, ALONE CAN BUY. KNOWLEDGE OF THE TRUTH IS IMMINENT AT THE APPROPRIATE LEVELS. tEACHING IS SOME ONE'S PROFESSION; HOW TO TEACH IS NOT THE JOB OF THE STUDENT. SO TOO MANY THINGS. KR IRS 311022
On Mon, 31 Oct 2022 at 12:13, 'gopala krishnan' via iyer123 < [email protected]> wrote: > *SWITCH PART 5* > > Dear friends, > > This is the final part of the posting under switch and related items in > simple manner. Again last one paragraph was wrong named as 27 instead of 29 > in the last posting, a typo. *This part start with paragraph 30* > > Gopalakrishnan 31-10-2022 > > *30 Press type switches* > > Press type switches we can see in computer, lap tops, remotes, torch > lights etc. First press will switch ON the supply, 2nd pressing will > switch OFF. This type of switch is normally seen in *low voltage circuits*. > > > Some *recent fans have come with this type of arrangement. *An > electronic circuit provides continuity for working. So with a remote the > fan can be switched ON and OFF, the *permanent circuit for fan is Kept > switched ON*. I doubt this type of switching is safe when people are away > for days by switching OFF from the remote unit. > > *31. Non locking switches* > > Non locking switches are provided where equipment has to operate for a > short period like *calling bell. * > > *32 Both way working* > > In special wiring like light and fan switching ON or OFF from two places > – *viz normal switch board and switch board near cot, *these ordinary > switch will function from both places. In this case in regular switch board > switch may be OFF position, but fan may be working. Most technicians switch > OFF mains and UPS supply and work in the switch box for replacement etc. > Either emergency light or torch from mobile phone is used for light, > switching them ON. > > *This is a case of stair case wiring*. In stair case wiring light for > stair case can be switched ON from ground floor or from first floor and > switched OFF also from either places. I studied stair case wiring while > undergoing training as Telephone inspector. > > *33. Compound and gate lights.* > > These lights are always switched ON from the inside of home. Since these > lights have to withstand rain and sunlight, covering is provided. Compound > lights can be *either tube lights or bulk fitting.* Sometimes both are > provided. > > *34 Power distribution panel and rotary switches* > > It is warned that only experienced persons should operate rotary switches > in this board. Power indication of the three phase supply is provided by > LED lights above the rotary switches. Normally different color LEDs are > provided. It is advised to keep it switched ON. > > If supply in any phase fails in extreme emergency by operating the > rotary switch, supply from another phase can be connected to work light, > fans, AC units etc. Ensure there is not much load in both phases. > > *The following is simple information about distribution panel. Please > note it is for just information*. In any distribution panel only > electricians work for repairs, what the owner of the house can do is only > operation of rotary switches. Ensure cleaning outside of the board is > done by electrician only. *It is best operate rotary switch using > insulated footwear.* > > From the external switch board three phase supplies and UPS supply comes > to this panel. As told already separate circuit breaker is for UPS and > common circuit breaker for three phase supply. The three phase supply is > extended to rotary switches. Each rotary switch has all the three phases > enabling switching of phases. > > There are section circuit breakers. Wiring cables are extended to these > circuit breakers. Three phase supply is extended dividing the circuit > breakers as sections. > > Example of section. In a home, hall, sit out, portico, front compound > lights, sump motor can be a section. Kitchen, work area, fridge, mixer, > grinder, ROS system, bore well can be another section. Similarly > sections are decided. > > *Note the AC units have circuit breaker both near AC unit and in the > distribution panel.* > > In most cases distribution panel details are given to house owner *if > insisted*. Technicians mostly make out from fault attending and regular > technicians may write for reference with marker the details. > > In my home after house warming my co-brother, an electrician and my son > marked the details in the distribution panel and I prepared a chart in my > laptop and taken print and hung near the main door to check out circuit > breaker trips. *Technician just refers it in case of necessity. * > > -- > You received this message because you are subscribed to the Google Groups > "iyer123" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/iyer123/402526955.1460081.1667198600037%40mail.yahoo.com > <https://groups.google.com/d/msgid/iyer123/402526955.1460081.1667198600037%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. 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