Freezer Tripping Rcd

[YTSOxford]

Hi all,

I have a TT system at the moment and a freezer trips the rcd on start up. I am rewiring and the old 100m/a rcd board is still on, it works fine on this and starts up, and if you leave it for a few minutes and plug it into the new board afterwards, it does not trip the new board.

what would you guys do? It was connected to a socket outlet plate before, with a 30m/a built into it and this did not trip, is it possible to have this on a dedicated circuit? Even though it would be mainswitch side - so no rcd protection to the plug, (surface mounted)?

 

[DurhamSparky]

Faulty RCD?????

 

[Deleted member 9648]

Have you carried out an IR test to earth on the freezer?

 

[YTSOxford]

hi mate - i have tested the new boards RCD and all is fine, not sure about the old RCD intergrated socket that it was plugged into tho, it probably has had it. I do remember the builder saying he got a shock of the old wiring, but then again he sholuld be leaving that to me! :-0

 

[UNG]

If the freezer has an auto defrost function then this is possibly causing it to trip the RCD. Have found this with a number of freezers they have a heating element which operates about every 24 hours this becomes porus drawing in damp or it is slowly failing causing it to trip the RCD. Have also had similar problems caused by temerature probes

 

[YTSOxford]

Have you carried out an IR test to earth on the freezer?

not yet, might give that a try.

 

[YTSOxford]

If the freezer has an auto defrost function then this is possibly causing it to trip the RCD. Have found this with a number of freezers they have a heating element which operates about every 24 hours this becomes porus drawing in damp or it is slowly failing causing it to trip the RCD. Have also had similar problems caused by temerature probes

Thanks. That probably is the cause just not sure how to solve the problem.

 

[UNG]

Thanks. That probably is the cause just not sure how to solve the problem.

As a temporary measure disconnect the heater normally located at the bottom edge of the cabinet by the commpessor on the back of the freezer

 

[JUD]

Hi all,

I have a TT system at the moment and a freezer trips the rcd on start up. I am rewiring and the old 100m/a rcd board is still on, it works fine on this and starts up, and if you leave it for a few minutes and plug it into the new board afterwards, it does not trip the new board.

what would you guys do? It was connected to a socket outlet plate before, with a 30m/a built into it and this did not trip, is it possible to have this on a dedicated circuit? Even though it would be mainswitch side - so no rcd protection to the plug, (surface mounted)?

If the route the cable takes does not require RCD protection (surface mounted or buried more than 50mm in wall) the regs state that RCD protection can be omitted for sockets labelled for a specific item of equipment.

 

[ian.settle1]

If the route the cable takes does not require RCD protection (surface mounted or buried more than 50mm in wall) the regs state that RCD protection can be omitted for sockets labelled for a specific item of equipment.

Supply is TT so doesn't it need a RCD at front end if disconnection times can not be met

 

[wattsup]

my freezer motor/heater causes the digital tv to freeze...no pun intended

 

[JUD]

Supply is TT so doesn't it need a RCD at front end if disconnection times can not be met

Yep. Missed that bit