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Electrical

Domestic Household FCU

Anonymous user 23/02/2024 - 3.17 PM

I am currently replacing an FCU in my bedroom. I thought it would be a simple task. However, it has not turned out that way. Having removed the old FCU from the metal box i observed that i had two cable entering the box with the usual live, neutral and earth. Having tested both live cables with my voltmeter i discovered they are both constantly carrying 240v. Therefore I'm at a loss to identify which cable should be the supply and which is the load. As a side issue if both live cable are constantly carrying 240v is there any need for a FCU? Could i just connect the cable together and do away with the requirement for an FCU? Any advice would be greatly received

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3 Answers

DEACON ELECTRICAL SERVICES

Rating: 5 out of 5

Grimsby

Call an electrician

Answered19 May 2018

County Electrical

Rating: 5 out of 5

Inverness

It sounds like the fused connection unit would have had something else connected to it previously. The wires which you are testing form part of the ring circuit. You shouldn't really be testing this the way you are, as there's a risk of electric shock. Yes, you can do away with this fcu as it's not needed anymore.

Answered20 May 2018

Anonymous user

First of all, you can not open a device which is carrying current due to you are not qualified electrician to do so, and could be the risk of electric shock. To work it out which is your supply and which is the load, the circuit needs to be isolated (no power), following by a continuity test. Normally your isolator (FCU) is marked "Supply and Load" sides. Removing, your FCU means that your not able to isolate your appliance when they needs to be inspected or maintained. Please, be cautious.

Answered4 June 2018