Re: [RE-wrenches] How to isolate the array DC

2015-02-02 Thread Glenn Burt
Of Mark Frye Sent: Monday, February 02, 2015 4:24 PM To: RE-wrenches Subject: [RE-wrenches] How to isolate the array DC In order to clear up the conversation... I you put a relay in a box within 10 feet of the array on the roof, you can use an relay with a DC rated Normally Open contact to open

Re: [RE-wrenches] How to isolate the array DC

2015-02-02 Thread Mark Frye
-wrenches Subject: [RE-wrenches] How to isolate the array DC In order to clear up the conversation... I you put a relay in a box within 10 feet of the array on the roof, you can use an relay with a DC rated Normally Open contact to open and connect/isolate the array DC voltage. You can drive the coil

Re: [RE-wrenches] How to isolate the array DC

2015-02-02 Thread b...@midnitesolar.com
The inverters' input capacitors may be charged and so that must also be isolated near the inverter. A grid operated contactor will not work for a battery-back up system. Also, 600V DC can weld contacts closed and if this happens and there is no feedback to show that the contacts

Re: [RE-wrenches] How to isolate the array DC

2015-02-02 Thread Jerry Shafer
-Original Message- From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye Sent: Monday, February 02, 2015 4:24 PM To: RE-wrenches Subject: [RE-wrenches] How to isolate the array DC In order to clear up the conversation... I you put a relay in a box

[RE-wrenches] How to isolate the array DC

2015-02-02 Thread Mark Frye
In order to clear up the conversation... I you put a relay in a box within 10 feet of the array on the roof, you can use an relay with a DC rated Normally Open contact to open and connect/isolate the array DC voltage. You can drive the coil of that relay with either AC or DC, but either