Clive P
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- Reaction score
- 169
Hi Everyone,
I have been a member of the forum now for a few months, but this is the first time I have been on the PV Forum, my apologies if this has been brought up before.
A friend of mine is connecting up some stand alone panels ( 14 in all , 7 Banks of 2 in series as per the manufacturers instructions ). The maximum output of each bank of panels is 42volts , which are feeding a 24V Battery bank. The battery bank supplies a Cathodic Protection unit ( this is for Gas Pipeline protection ). My question is , should the outputs from the Panels be protected in some way, ie DP DC MCB or similar; or because they are below 50 V then this is not a requirement? I believe he is looking primarily at short circuit protection or is this limited by the panels themselves? There is no connection to any Mains voltage , but he has put down an Earth rod and this has a reading of 900 Ohms ( extremely bad shale type ground ).
The Batteries themselves will be protected with a 30A HRC fuse.
Any thoughts would be much appreciated.
I have been a member of the forum now for a few months, but this is the first time I have been on the PV Forum, my apologies if this has been brought up before.
A friend of mine is connecting up some stand alone panels ( 14 in all , 7 Banks of 2 in series as per the manufacturers instructions ). The maximum output of each bank of panels is 42volts , which are feeding a 24V Battery bank. The battery bank supplies a Cathodic Protection unit ( this is for Gas Pipeline protection ). My question is , should the outputs from the Panels be protected in some way, ie DP DC MCB or similar; or because they are below 50 V then this is not a requirement? I believe he is looking primarily at short circuit protection or is this limited by the panels themselves? There is no connection to any Mains voltage , but he has put down an Earth rod and this has a reading of 900 Ohms ( extremely bad shale type ground ).
The Batteries themselves will be protected with a 30A HRC fuse.
Any thoughts would be much appreciated.