jea48

Responses from jea48

Square D QO Panel Recall
@kingrex You said: The NEC does not allow for reconditioning of a loadcenter, so you would need to pull the interior out of the panel can and replace it with new. Jmho, 2020 NEC 408.8 (A) does not apply. This does not fall under the definiti... 
Square D QO Panel Recall
If your Square D QO Load Center panel is on the recall list I suggest you call an electrician to do the job. He will check all the neutral bar assembly connections for tightness, and proper torque. If the electrical panel has been in use for a wh... 
What type of wire for dedicated 20A AC lines?
Do not increase the wire size beyond 12 ga. as this is a code violation Not true... FWIW: National Electrical Code 90.1 Purpose: (A) Practical Safeguarding. The purpose of this Code is the practical safeguarding of persons and property f... 
What type of wire for dedicated 20A AC lines?
@richopp An Overview of Audio System Grounding and Interfacing Take note of page 16. Read pages 31 thru 36. Note the chart on page 35. AL armored MC measured the second best. Number one being the best where the hot and neutral conductors are ... 
What type of wire for dedicated 20A AC lines?
@kijanki +1   Please explain what happens if the power transformer’s secondary winding voltage is lower feeding the rectifier, due to a quick AC mains VD event, and the electrolytic capacitors voltage is higher. Just going from memory the rect... 
What type of wire for dedicated 20A AC lines?
jea48 said: Where was your reference point used for the measurement? At the electrical panel? ieales response: Where else? Usually the no load voltage is checked at the last outlet on the branch circuit. No loads are connected to the circu... 
What type of wire for dedicated 20A AC lines?
@gdnrbob  Bob, Thanks for the kind words. Jim  
What type of wire for dedicated 20A AC lines?
@nyev  I gotta ask. Is your electrical panel mounted sideways? Horizontal instead of vertical? What's with that? Jim  
What type of wire for dedicated 20A AC lines?
@ditusa    I suggest you read NEC 210.6 (A)(2) "Branch-Circuit Voltage Limitations"    
What type of wire for dedicated 20A AC lines?
@nyev  I would not feed the amp with 240V. Probably the biggest reason you couldn't use aftermarket 120V plug power cords. (A 240V branch circuit will require a 250V wall receptacle...)  
What type of wire for dedicated 20A AC lines?
Mike, He can use a plastic box and still be code compliant... Jim  
What type of wire for dedicated 20A AC lines?
@nyev I assume you live in the US... Solid core #8awg 600V insulated power wiring hasn’t been made in years. Insulated #10awg is the largest solid core wire made...   For a 50ft run, length, #10 should be more than adequate. I doubt if pushin... 
How To Match Power Tubes
Example: Here is the procedure for the ARC VT50 when retubing the amp. https://www.vintageshifi.com/repertoire-pdf/pdf/telecharge.php?pdf=Audio-Research-VT50-Bias-Adjustment-Manual.pdf https://www.arcdb.ws/model/VT50 Trim pots for biasing the ... 
How To Match Power Tubes
@dgclark0007 What model ARC amp do you have? The VT series therein, VT50, VT100, VT100 MK 2 series requires the 6922 signal tubes must also be biased. I believe, looking at the schematic diagram for the ARC CA50, the 6922 tubes also require bia... 
How Electricity Actually Works
@oldrooney I received your PM. Agon blocks Web Links in a PM... Below are some posts from the Late rcrump, ( Bob Crump) that may help. Here is one post of rcrump’s from the thread. https://db.audioasylum.com/cgi/m.mpl?forum=cables&n=...