maximum demand and diversity

[DPG]

Am I being silly here? Where does the 16A socket rating come from?

 

[pushrod]

Am I being silly here? Where does the 16A socket rating come from?

I think he probably meant the MCB rating for the radial circuit - but wasn't sure. Might have been a fixed load at a double socket as it sounded as if he was doing a theory question.

 

[petegibbons]

I am trying to calculate the maximum demand for a domestic property which has got 7 showers in it. Do I ad in each shower being used at 100%??

 

[pushrod]

7 showers wow! I would think that some discussion with the owner is appropriate to ascertain if there will be occasions when they all could be being used or if it will never happen.EG a bed and breakfast and you would have to just add them up.

 

[petegibbons]

7 showers wow! I would think that some discussion with the owner is appropriate to ascertain if there will be occasions when they all could be being used or if it will never happen.EG a bed and breakfast and you would have to just add them up.

It's a supported housing property, they will never be on all the time.

 

[scotsparky]

Am I being silly here? Where does the 16A socket rating come from?

The 16a socket rating is the assumed maximum demand for each leg of a ring circuit. 16x2+32A
This is why you can wire in 2.5mm as its classed as a duel feed of 16A per leg.

 

[piggyitm]

Now i'm confused! Is it the 1st socket rating(13a) on a ring and then 40% of all the other sockets on that ring(13- 60% = 5.2?) or 32A fuse minus a rule of thumb 40% diversity per ring?

 

[sparky16]

hi looking for help, not best at working out answer would be much appreciated. Applying diversity to this circuit one 5.5kw 3 phase induction motor for gas hot air ducting system having power factor 0.75. efficiency 90 %

 

[telectrix]

That is what i understand it to be.

me too. use the circuit breaker rating, irrespective of how many outlets, ring or radial.