Discuss Fitting a 100ma RCD on Solar PV to solve nuisance tripping. in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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A solar PV system keeps tripping the 30ma B curve RCD (at dawn).

The system is a TNC-S and the cabling to the inverter is surface mounted SWA.

Is there any reason to not swap the 30ma main switch out for a 100ma ?
 
Hi South spark , what size system is it , make of inverters and is it domestic or commercial ?
 
Would you know if the Sunny Boy is:

a. transformerless?
b. is disconnected from the SWA cable until PV generation starts?

One thing to look at (from netblindpaul#8) is how tightly have the dc cables been clamped around their insulation to any metalwork.

If there is more than one Sunny Boy (I expect so) can you disconnect one in turn and leave the others on-line to see if the problems goes away?
 

Reply to Fitting a 100ma RCD on Solar PV to solve nuisance tripping. in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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