Yes a 2.5mm2 T&E cable can supply a 7,300 Watt instantaneous water heater at 240 Volts. I came across this today. The supply was from a B32 M.C.B. So why do we use bigger cable than 2.5mm2 if it will do the job?
The run was about 5m maximum.
Z.
Yes a 2.5mm2 T&E cable can supply a 7,300 Watt instantaneous water heater at 240 Volts. I came across this today. The supply was from a B32 M.C.B. So why do we use bigger cable than 2.5mm2 if it will do the job?
The run was about 5m maximum.
Z.
Take an electric motor of 3kW. What is the wire size in the windings? Is it around 2.5mm2 or is it considerably less? Why is this satisfactory?
Some motors are rated for less than continuous duty. Also many motors are fan cooled. An inductive load opposes the supply current. Then there's back E.M.F. Oh, and the current is shared over several windings.
Here is a nice little 3kW geared motor…….
Z.
Take an electric motor of 3kW. What is the wire size in the windings? Is it around 2.5mm2 or is it considerably less? Why is this satisfactory?
Some motors are rated for less than continuous duty. Also many motors are fan cooled. An inductive load opposes the supply current. Then there's back E.M.F. Oh, and the current is shared over several windings.
Here is a nice little 3kW geared motor…….
Z.