max demand cooker and heating system

[Kelrich]

morning everyone
could someone please help me on calculating max demand on a cooker ran off 6mm t&e off 40amp mcb, the cookers kw unknown but its older than grass!!
also an old fashioned heating system ran off 2.5 t&e off a 16a mcb which circulates hot air through vents throughout the house again kw unidentifiable.
any help would be great thanks

 

[Specialist]

Hi Kel: Can't you use a Clamp meter aroung the Live to each item when on full ? You'd know exactly what you were looking at then.

 

[Kelrich]

hi specialist unfortunatly i aint got one of those and got no wages to get one 3 kids have bankrupt me this chrimbo haha will invest in one soon tho cheers

 

[Kelrich]

just need the total max demand on my eic for my assessment worked out sockets lights etc just stuck on the above items as theres no identification on them, they were installed in 1972 so you can imagine the state they in

 

[Specialist]

hi specialist unfortunatly i aint got one of those and got no wages to get one 3 kids have bankrupt me this chrimbo haha will invest in one soon tho cheers

Ooh mate, i know exactly where your coming from lol. Got 3 girls of my own Just thought that maybe you'd forgotten about doing it that way lol, if you want a clamp meter for occasional use they do a small 1 in Maplins for £13.00 & according to some of the guy's on here it's quite good.

Older cookers if I remember rightly were about 1.6 to 2 kw per ring & the oven about 3 to 3.5kw. The forced air heating probably about 3kw. But are you sure it's Electric forced air & not Gas / Oil useing a fan for distribution ?

 

[spark 68]

just need the total max demand on my eic

You could just use the size of the MCB/fuse and a suitable percentage depending on which method you are using for your calcs, in the absence of any other information.

 

[Kelrich]

thanks specialist i,ll look into it cheers, other than buying that its not possible to work it out without knowing the kw of the equipment

 

[Specialist]

Well yes as Spark 68 has said above. Do you by any chance have a Make / Model for the cooker ? you could probably find out from that.

 

[Kelrich]

sorry specialist only got half of your reply before, dont think any gas or oil is involved i will get back to you in a few mins, adding the breakers together gives me 116a, main fuse is only 60a oviously not everything will be on at the same time so would i put 116a onto the eic, if i use diversity iam still stuck on cooker and heating because i still need the kw

 

[Rampage]

Can you not measure the resistance of the heating element and use ohm's law.

Sent from my GT-I9100 using Tapatalk