looking to get a bit of help got a job that currently has 8 flats and a landlord supply and a big office on the ground and basement
After using the OSG for diversity have come up with the following
118A per flat (no gas)
127A for landlord (lift etc)
180A for office (air con)...
daveb1
Thread
3 phase
access
demand
flats
maximum
office
phase
supply
Hi guys
Basicly iv got a 6 bedroom house
100A bs 1361 single phase supply
main fuse board is new with 25mm tails with 2 spare ways
would a extra submain fed by 25mm tails for the origin support 5 shower circuits say 40A MCBs 10mm cables 8KW showers
taking into consideration diversity would this...
Hi guys, I'm looking to install a sub board to feed 4x 8.5kw shower circuits and 2x 2 ring 3kw hob circuits (4x32amp MCB's and 2x16amp MCB's). What would be the best method to work out the maximum demand? I get 83amps. Many thanks in advance.
I'm intending to finally refit my bathroom, first thing I want to get sorted before I start removing tiles and making a mess is the maximum KW shower I can currently install and what are my options as my current shower suggests my electrics may not be suitable for modern showers.
6mm cable
The...
borofc
Thread
attach
cable
current
install
maximum
shower
showers
Hi Everyone,
I'm trying to determine, for the network shown below the value of the load Impedance that will dissipate the maximum power and the value of this power.I already calculated the Rth , but I'm stuck on P=I2R.Can someone help please?
Thank you.
Good afternoon all, firstly im pretty rubbish at cable calcs. My question is this, the load on the circuit is 6.6kw for a outdoor ev charger so the cable would be clipped direct. Using 4mm NYY cable is ok subject to the cable length, any ideas on the maximum cable length before having to use...
Hi all, Scenario: A fused spur unit added to a ring main to supply several window actuators via an open / close rocker switch. The ring main is protected by a 32 Amp type B Mcb, the fused spur would only require a 5 amp BS 1362 fuse (lets say a 13 amp for worst case scenario in case replaced...
Hi, what's the maximum load I can run from a shaver socket in a bathroom? Can I run speakers in the bathroom from this point?
If that load is maximum, can I put extension cable into the bathroom and how long does it need to be away from the shower?
In preparation of wiring up a commercial premises (function rooms / bars / restaurant area) I am trying to determine to what extent the existing 60A single phase supply might need upgrading. I have not had to do this myself for a commercial premises, and I am wondering if the same rules apply as...
Currently completing 2396 project (cant wait to see the back of it!!) Would just like to check im on the right wavelength when calculating max demand and diversity
DB1 Maximum Demand & Diversity
Lighting - 90% of total demand.
Total demand of lighting circuits is 50.48amps. After...
In my latest exam a question asked:
what is the maximum test current for a 100mA RCD,
50mA,
100mA,
150mA or
200mA
I think I have revised so much by brain has turned to mush! I believe the answer is 100mA but could someone please confirm?
Hi guys I'm after a bit of help with working out my Max Demand normally in a domestic situation its fine but theres so many heaters and water heaters on this that I'm a bit confused.
I have been asked to do a bit of commercial installation for a kitchen and toilets its a children's soft play...
Hi guys this is my first post asking a question so here goes!
I'm currently having a debate with my boss who is adement that you can only have a 16A MCB on a 16A socket outlet. I'm sure I've seen somewhere in the regs or OSG that the maximum size MCB is a 20A on a 16A socket (Don't ask me why...
Can someone help me work out a max demand
got a
40amp shower
32 amp cooker
16 amp radial
16 amp radial
32 amp ring
6 amp lighting
6 amp lighting
whats the calculation to work out max demand please
Hi,
I am looking for a little advise on how to apply diversity and work out maximum demand on a new installation I am designing in a Cabin.
Cabin CU has 3 circuits
Circuit 1
6 Socket outlets - to supply 2.7KW Floor standing Hair dryer
Electric Oil filled radiator
Hand held hair dryer
Kettle...
hi guys. if i calculate maximum demand like i got 6 circuit
32a cooker
32a upstairs ring
32a down s. ring
20a,radial
6a upstairs light
6a down stairs light get the higgest one and add the rest together get 40% of it and finally add to highest one.. do u thing is that right??
and also do...
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