Now that we've harmonised with the EU with UK electrics via the 17th Edition the rule of thumb is now tied to the Euro.Is it still 3/4 ( GN 3 ) or now 0.8 ( 17th edition ) ????
Class - have a scoob (if they`re fixed!)Now that we've harmonised with the EU with UK electrics via the 17th Edition the rule of thumb is now tied to the Euro.So what is 'our' thumb is actually now 1.265 thumbs under the 17th Ed.
Oh! This is a serious question?What ??Lost me there.
Need to know which value to use in 2391 exam which is now to 17th ed.
Is it still 3/4 (GN3) or 0.8 (bs7671 17th ed. )
:^O :^O:^O pmslMy boys often bring fingers home with them, never seen any thumbs yet.Don
PMSL 2 @GFMy boys often bring fingers home with them, never seen any thumbs yet.Don
.8 of what exactly?Rule of thumb for Zs 17th edition is .8
Yes, he IS trying (to be good) :^O :^O.8 of what exactly?of the measured, of the calculated,
seems to me , and Im really trying to be good here,
(ask anyone)
that you really dont have a f*ing clue what you are even asking the Q about.!
BOTH valid 16th & 17thIs it still 3/4 ( GN 3 ) or now 0.8 ( 17th edition ) ????
where is this 0.8 17th reference coming from?What ?? Lost me there.Need to know which value to use in 2391 exam which is now to 17th ed.
Is it still 3/4 (GN3) or 0.8 (bs7671 17th ed. )
Very true sir... pick your thumbs wisely? ; \IT WOULD HELP IF YOU asked rule of thumb for what exactly.(sorry for caps but not typing again, too lazy)
Zs
RCD times
cable lengths
MCB ratings
cable current carrying capacities
bit more concise than rule of thumb would be handy.
or,
if a man says a horse is 10 yr old, rule of thumb is to eat 3 shredded wheat.
makes about as much sense.
still unsure where this 0.8 = 17th idea is coming from? ?:|Anyone that has done the 2391 course should know what the rule of thumb refers to.The tabulated values of Zs need multiplying by 0.75 (or 0.8 if working to the 17th) and the measured values must be equal to or lower than the corrected value.
I think the OP is just assuming that people here would know that.
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