Hi
Just a little background about me, Im nearly through my first year at college carrying out an electrical apprenticeship, hopefully someone can answer my question for me:-
We were meant to be installing some emergency lights in FP200 1.5mm today but when we got to site the inhouse electrician / maintenance man said that the Ze value is so low (I think, or was it so high.....) the cable would need to be urgraded to 2.5mm, but isn't the cpc the same size 1.5mm on both cables?
Im assuming there is a formula to calculate the required cable size from the Ze reading for the inhouse electrician to come to this conclusion - what is it?
Why am I asking here and not my boss, basically I dont want to look stupid in front of him!
Regards
Just a little background about me, Im nearly through my first year at college carrying out an electrical apprenticeship, hopefully someone can answer my question for me:-
We were meant to be installing some emergency lights in FP200 1.5mm today but when we got to site the inhouse electrician / maintenance man said that the Ze value is so low (I think, or was it so high.....) the cable would need to be urgraded to 2.5mm, but isn't the cpc the same size 1.5mm on both cables?
Im assuming there is a formula to calculate the required cable size from the Ze reading for the inhouse electrician to come to this conclusion - what is it?
Why am I asking here and not my boss, basically I dont want to look stupid in front of him!
Regards