The Natural Philosopher wrote:

On 06/12/2019 10:04, wrote:
On Thursday, 5 December 2019 23:45:24 UTC, Rod Speed wrote:
Cant see that algebra is much use to an electrician.

Of course not, electricians /never/ calculate anything using an equation
do they.

Owain

Electricians don't, no. Electrical engineers, however, do.

But they do have to check wire temperatures under load and fautl
conditions, voltage drop and fault currents and things like that in
principle. Also do calculations for commissioning checks. The fact you
could rewire an average house with average materials and never exceed
any limits doesn't mean a professional electrician shouldn't bother.
And not all wiring is an average house.
--

Roger Hayter