Diversity and Maximum Demand in Electrical Installations. 

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A special thank you from the bottom of my heart for this explanation, and thank you on behalf of all of us foreigners who decided to study electricity in English. Your slow and precise voice allows us to understand better. Once again, thank you very very much.

Your explanations are much easier to understand than college, thank you Dave .😊

I dont know how to thank you for these helpful videos. You are a great teacher. Currently, I am doing my assessment and the tutor asked me to explain the discharge lighting when considering diversity and max demand. This video explained it all. Thank you

The clearest explanation of an often confusing subject. Thanks

Thank you Dave.Your level of teaching is simply amazing

Thanks dave another class video, started throwing a link to your channel around some of the other elec sites on youtube, hope it helps man worth a go anyways. Your material is priceless mate your channel deserves more, steve.

I am studying towards my domestic installer and I found that the course I am taking completely lacks most of your excellent content. I would be happy to donate/gift towards future videos as I am sure your channel has made the difference between being successful in my new career. Thank you

Absolutely incredible video and so easy to understand. Thankyou

I know a lot more now thanks to your videos. The best way to learn they are better than the college. Keep making more

Great presentation as always, thank you DAVE, you make me love my job as an electrician and adding more knowledge to my mental tool box

You are number 1. Number 0 if it was possible! Thank you a lot !

This video has been very helpfully, I’m very grateful

Really good video, you explained it very simply. Thank you for making and sharing

Always clear and concise explanation

Poor Mrs B..... she's a slave to her kitchen 😂😂 Great video, I really like the simple way you explain things 👍👍

Absolute legend thanks again Dave. Another very informative video. Your students are very lucky to have you.

With the introduction of low wattage LEDs for our lights 100W per lamp seems excessive. Great video.

Did that separate video ever come out ? For industrial and commercial properties? Loving these videos btw

Very good presentation-many thanks.

Thank you again - a complicated topic simplified very well.

can you disregard solar installations? lets say you have a 20a circuit for a 3.68kW inverter.. this has no demand as its a generator? does solar actually offset max demand therefore reducing it? obviously this is only the case for the midday but this is when it will be assumed that load demand is at its highest.. and with battery storage does demand reduce again? hopefully i explained htat correctly. thankyou for your videos mate they are so valuable

Great video 👍, I hope this comes up in c&g2396 and will use a similar explanation. 👍

I appreciate your effort, Dave keep it up

Great vid! What about Fridges?

Thanks, is it possible to provide more information about how to calculate the diversity for more than one cooker, i.e. On-Site Guide H4

Excellent 👍

Thank you Dave. Enjoyable and informative video.

Thanks again.. for a very 'user friendly' explanation.. works for me .. lol Cheers.. 👍

Thnaks Dave,great video,but there is one i don't understand,why the fluorescent lamp we multiply the actual lamp rating by 1.8 to get the total watt??where is the 1.8 come from?what is stand for ?thanks dave

The one I have been waiting for. Thank you. 👍

Nice one dave 👍 love this channel even a non sparks like myself finding it so interesting 👍 what other videos will be coming up soon dave? Would you do one on different types of cable in domestic houses right from old to new stuff, it would be brilliant to see how it’s changed over the years

Excellent

This sort of unrelated to the subject...if I'm doing a kitchen and I ran a 10mm cable for the HOB can I add a socket next to it for the oven...or do I need to run a separate circuit...take it of the ring...THANKS

Room heater diversity. Does thermostatically controlled underfloor heating in each room, class as wall mounted room heater? thx

Thank you Dave, great work. 👍

Thanks it is very helpful

Hi dave excellent video diversity , on-site guide 1.5 mm 1mm 6A 106 metres how it calculation formula that is lighting circuit, so therefore can you do more video .thank you

Thanks great video and helpful

Wonderful

Many thanks Dave

Wouldn't you need to also divide the watts by the power factor of the cooker, to get the actual current draw?

Thankyou !

Nice vid.

In relation to cable calculations, can anyone clarify for me whether you apply diversity before or after you work out In? Because the way we do at my college is to work out your In from your Ib but surely if you do that and then go on to apply diversity after cable selection youd potentially have use a lower rated circuit breaker?

having trouble to understand how 66 percent was determined for lighting ??

Thanks

I can you do one Max RCD tripping time please 1 × and 5× ?

Brilliant

Thanks again!

Lovely

Page no of 311.1 is changed. It is now on page 51, in new 18th editions.

You're a good egg x

The DNOs fuse is to protect _their_ system, *not* yours as that is your responsibility. Say the main DNO fuse is 100A, a double pole 100A MCB can be fitted which can also double up as a main isolator. This is a cover all for any diversity of a whole house system. So diversity can say give 115A, but the 100A main MCB catches all.

What happened to Emily’s husband? 😢

Ok

And therein lies the problem! Sparkies are NOT clairvoyant. ANY installation SHOULD be designed for a "Bert" or higher usage even. Otherwise when "Bert" moves house he has to forgo his hobby for weeks or even months and lay out a fortune to have his house & CU completely rewired to be suitable. STOP designing CU's for low loads! ALWAYS design for high usage, ESPECIALLY since electricity usage is increasing all the time. I'm sick and tired of seeing 6-way and 8-way extension leads having to be used in other people's houses I've visited because there are only TWO sockets in a room! Even in new builds! Bloody ridiculous! There should be AT LEAST one double socket on each wall! Anything else is BLATANTLY stupid. Likewise in bedrooms ONE double socket on ONE side of an expected bed position when there are two possible bed positions meaning FOUR DOUBLE socket outlets, one each side of each bed position and another above a standard height dressing table for hair drier etc. A house I had in Bradford had 26 individual sockets/switched power feeds in the kitchen alone on its own ring! On one occasion 22 were occupied! Not all delivering power at the same time but who wants to keep plugging and unplugging a mixer when you want a cup of tea and you can't use the microwave and toaster at the same time? Always design for "possible" not probable expected maximum load in a specific situation and with minimum diversity expected in a generic situation! Anything else is just the electrical industry lining their pockets at the expense of consumers!

Poor Emily :(

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