W
willo1991
first post on here, use it quite a lot and have found it extremely helpful so thanks to everyone who does post and reply i'm studying at the moment and have come across a question that im not too sure how to finish, the question is as follows;
A 230 volt 14kW cooker installed in a house is to be supplied by a 15m run of pvc insulated and sheathed cable, clipped to a surface. the circuit is to be protected by a BS3036 30A fuse and the value of external impedance is 0.85 ohms. Calculate the minimum size cable that can be used for this circuit to comply with thermal constraints.
so i start with;
Ief = 230/1.01 = 227.722
T= 0.1
K=143
Therefore S= sqrt227.722 squared * 0.1 / 143 = 0.503
where do i go from here? very confused?
any help or guidance would be greatly appreciated! again first post on here so go easy on me lol.
A 230 volt 14kW cooker installed in a house is to be supplied by a 15m run of pvc insulated and sheathed cable, clipped to a surface. the circuit is to be protected by a BS3036 30A fuse and the value of external impedance is 0.85 ohms. Calculate the minimum size cable that can be used for this circuit to comply with thermal constraints.
so i start with;
Ief = 230/1.01 = 227.722
T= 0.1
K=143
Therefore S= sqrt227.722 squared * 0.1 / 143 = 0.503
where do i go from here? very confused?
any help or guidance would be greatly appreciated! again first post on here so go easy on me lol.