consumer unit fuse to mcb
- Thread starter dsr
- Start date
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There always some on Fleabay. The ones with a push button are the older model, the flick switch is current. Try to pay £2 to £3 incl postage per switch. If you buy them singly the postagw ill mount up.
Be sure to buy them with the coloured shields included as they will not fit the old plastic shields from your fuses.
When you fit them, be sure to turn off the main switch first. Don;t remove the CU cover.
When you pull out the fuseholder you will see its pongs go through two slots in a plastic shiels which has a retaining screw.
Remove ONLY ONE screw and take out the shield (this will expose the busbar so it is very important you turned the power off first. Put in the same colour shield from your new MCB and tighten the screw (use an insulate screwdriver as the screw might touch the busbar). Fit the maching MCB with its copper prongs through the slots. Then do the next one.
The reason for doing them one at a time is so you do not put the wrong sizes in the wrong holes as might happen if you have several open at the same time.
Most Common colours:
White - Lights, 6A
Blue - Immersion heater 16A
Red socket ring or cooker, 32A
If you do not feel confident that you understand it get a qualified electrican in.
There always some on Fleabay. The ones with a push button are the older model, the flick switch is current. Try to pay £2 to £3 incl postage per switch. If you buy them singly the postagw ill mount up.
Be sure to buy them with the coloured shields included as they will not fit the old plastic shields from your fuses.
When you fit them, be sure to turn off the main switch first. Don;t remove the CU cover.
When you pull out the fuseholder you will see its pongs go through two slots in a plastic shiels which has a retaining screw.
Remove ONLY ONE screw and take out the shield (this will expose the busbar so it is very important you turned the power off first. Put in the same colour shield from your new MCB and tighten the screw (use an insulate screwdriver as the screw might touch the busbar). Fit the maching MCB with its copper prongs through the slots. Then do the next one.
The reason for doing them one at a time is so you do not put the wrong sizes in the wrong holes as might happen if you have several open at the same time.
Most Common colours:
White - Lights, 6A
Blue - Immersion heater 16A
Red socket ring or cooker, 32A
If you do not feel confident that you understand it get a qualified electrican in.
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dsr said:
The MCBs are a bit deeper than the fuses so the cover that you take off when you change a fuse will not fit back on. You may be able to attach it loosely. It is possible to cut a hatch in the cover to let the MCBs poke through, but they are then exposed to anyone brushing against them (or, if under the stairs, knocking them when hanging coats up). This is more of a prob with the push button types as they only need a light touch on the button to trip off.
In my mother's house I fitted a translucent plastic cover made from a Wilkinson's sandwich box(!)
If you are careful you can cut the lid like this:
But like John said it is dead easy to catch a breaker and trip the power off by accident
But like John said it is dead easy to catch a breaker and trip the power off by accident
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