Welcome to A2Ks Shower Page

Switch

The 45A pull switch caused misleading diagnosis with the shower itself appearing to have a fault, trips the RCD when depressing the on/off switch. It turned out to be the 45A pull switch where the wires were trapped in the housing and over time the contacts became loose causing thermal heat to melt the insulation between neutral and earth, hence tripping the RCD when current passed along the neutral, gave the impression it was the shower!!! Wires welded in the connection of the switch. New switch and remaking the connections

Damaged

To the switch from overheating of the connections due to resistance developing over time leading to power being developed at the connections and the contacts causing the overheating.

Wires

Behind the switch had their insulation melted becoming soft allowing the conductors to touch or low resistance to develop between the conductors causing the trips to go, MCB, RCD when current passed in the conductors.

MCB

Miniature Circuit Breakers for overload in a circuit to protect the cable to the appliance. They come in a few flavors type A, B, C and can distinguish between a short and just a spike. Operates on a short circuit between the phase and neutral

RCD

Kept tripping every time the appliance on/off switch was operated giving the impression the appliance was at fault. Trips with a short circuit on the phase and neutral or the RCD on a low resistance between neutral and earth.