Oversink water heater 3kw or 7kw | Bathroom Advice | Plumbers Forums

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armyash

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Customer has sent me this picture.


IMG_9023.jpg


He wants it replaced with something similar.

Is there a big difference between 3kw or 7kw?

Triton Handwash - Search Results | NoLinkingToThis
 
the old 7&8.5 kw showers were always wired in 6mm so a 7kw hand wash unit should be no different remember the days we could wire up and connect into board ourselves ?..brum
 
the old 7&8.5 kw showers were always wired in 6mm so a 7kw hand wash unit should be no different remember the days we could wire up and connect into board ourselves ?..brum

<Cue "Hovis music" >
<Puts on fake yorkshire accent>

I remember selling 4mm cable for the cheapskates who were putting in 6kw electric water heaters or showers. I don't know if it was legal, but it used to happen in the 80s.

<returns to 21st century>
 
The installation method of the cable effects it's size a lot. The calculations are a pain, most sparks put in 10mm for showers as a rule of thumb.

That's useful, I didn't know sparkies used any rules at all, let alone a rule of thumb, now were are my regulation to find that rule............here it is stone age caveman regs BC 20,000, the rule of thumb

"if your cave is cold light a fire, current guidelines suggest that dry wood burns best, but you must read rule number 008 "rule of thumb" to ensure a safe installation"

Rule 008 "suck your thumb and hold into wind if the thumb goes cold on the cave entrance side that indicates a prevailing wind from outside to inside and it will blow smoke into the cave, do not light"
 

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