Several times I have made the electrical connections to shower pumps and left them for the plumber to connect the pipework ready to commission, then got a phone call to say there’s something wrong with the electric supply as the pump won’t work.
So you go back knowing there’s nothing wrong with the electrical connection to find plastic pipe and fittings looping all over the airing cupboard and bathroom full of airlocks along with a low head and thermostatic mixer shower all preventing sufficient water to flow to trigger the positive head shower pump.
I’m not saying it’s impossible to use a positive head shower pump, but I’m very wary of them now.
You need to use a flex connection plate, 20-amp double pole switch, a switched fused connection unit, a plug and socket or something similar to make the transition from the circuit cable to the pump flex, really the choice is based on location on the pump, most of the time a SFCU is ideal leaving the choice of circuit protective device wide open.
Several times I have made the electrical connections to shower pumps and left them for the plumber to connect the pipework ready to commission, then got a phone call to say there’s something wrong with the electric supply as the pump won’t work.
So you go back knowing there’s nothing wrong with the electrical connection to find plastic pipe and fittings looping all over the airing cupboard and bathroom full of airlocks along with a low head and thermostatic mixer shower all preventing sufficient water to flow to trigger the positive head shower pump.
I’m not saying it’s impossible to use a positive head shower pump, but I’m very wary of them now.
You need to use a flex connection plate, 20-amp double pole switch, a switched fused connection unit, a plug and socket or something similar to make the transition from the circuit cable to the pump flex, really the choice is based on location on the pump, most of the time a SFCU is ideal leaving the choice of circuit protective device wide open.
